Hydrochloride
In chemistry, hydrochlorides are salts resulting, or regarded as resulting, from the reaction of hydrochloric acid with an organic base . This is also known as muriate, derived from hydrochloric acid's other name: muriatic acid.

Hydrofluoric acid
Hydrofluoric acid is a solution of hydrogen fluoride in water. It is a valued source of fluorine and is the precursor to numerous pharmaceuticals such as fluoxetine and diverse materials such as PTFE .

Hydrofoil
A hydrofoil is a foil which operates in water. They are similar in appearance and purpose to airfoils.Hydrofoils can be artificial, such as the rudder or keel on a boat, the diving planes on a submarine, a surfboard fin, or occur naturally, as with fish fins, the flippers of aquatic mammals, the wings of swimming seabirds, or other creatures like the sand dollar.The term "hydrofoil"

Hydrogen
Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of , hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly composed of hydrogen in its plasma state

Hydrogen (disambiguation)
Hydrogen is a chemical element.Hydrogen may also refer to:* Hydrogen atom* Hydrogen ion* Hydrogen , drum machine software* Hydrogen vehicle* Isotopes of hydrogen** Hydrogen-2 ** Hydrogen-3 ** Hydrogen-4

Hydrogen bond
A hydrogen bond is the attractive interaction of a hydrogen atom with an electronegative atom, such as nitrogen, oxygen or fluorine, that comes from another molecule or chemical group. The hydrogen must be covalently bonded to another electronegative atom to create the bond

Hydrogen bromide
Hydrogen bromide is the diatomic molecule HBr. HBr is a gas at standard conditions. Hydrobromic acid forms upon dissolving HBr in water. Conversely, HBr can be liberated from hydrobromic acid solutions with the addition of a dehydration agent, but not by distillation. Hydrogen bromide and hydrobromic acid are, therefore, not the same, but they are related

Hydrogen chloride
The compound hydrogen chloride has the formula HCl. At room temperature, it is a colorless gas, which forms white fumes of hydrochloric acid upon contact with atmospheric humidity. Hydrogen chloride gas and hydrochloric acid are important in technology and industry

Hydrogen fluoride
Hydrogen fluoride is a chemical compound with the formula HF. This colorless gas is the principal industrial source of fluorine, often in the aqueous form as hydrofluoric acid, and thus is the precursor to many important compounds including pharmaceuticals and polymers . HF is widely used in the petrochemical industry and is a component of many superacids

Hydrogen iodide
Hydrogen iodide is a diatomic molecule. Aqueous solutions of HI are known as iohydroic acid or hydroiodic acid, a strong acid. Gas and aqueous solution are interconvertible

Hydrogen ion
Hydrogen ion is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes.Depending on the charge of the ion, two different classes can be distinguished: positively charged ions and negatively charged ions.

Hydrogen peroxide
Hydrogen peroxide is the simplest peroxide and an oxidizer. Hydrogen peroxide is a clear liquid, slightly more viscous than water. In dilute solution, it appears colorless. With its oxidizing properties, hydrogen peroxide is often used as a bleach or cleaning agent

Hydrogen sulfide
Hydrogen sulfide is the chemical compound with the formula . It is a colorless, very poisonous, flammable gas with the characteristic foul odor of expired eggs perceptible at concentrations as low as 0.00047 parts per million

Hydrogenase (acceptor)
In enzymology, a hydrogenase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are H2 and A, whereas its product is AH2.

Hydrogenation
Hydrogenation, to treat with hydrogen, also a form of chemical reduction, is a chemical reaction between molecular hydrogen and another compound or element, usually in the presence of a catalyst. The process is commonly employed to reduce or saturate organic compounds. Hydrogenation typically constitutes the addition of pairs of hydrogen atoms to a molecule, generally an alkene

Hydrography
Hydrography is the measurement of the depths, the tides and currents of a body of water and establishment of the sea, river or lake bed topography and morphology. Normally and historically for the purpose of charting a body of water for the safe navigation of shipping

Hydrology
Hydrology is the study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability

Hydrology (album)
Hydrology is a Recoil studio album, released January 25, 1988.Hydrology was Alan Wilder's second Recoil release. The CD and cassette version included the first release, 1+2.

Hydrolysis
Hydrolysis is a chemical reaction during which molecules of water are split into hydrogen cations and hydroxide anions in the process of a chemical mechanism. It is the type of reaction that is used to break down certain polymers, especially those made by condensation polymerization

Hydrometer
A hydrometer is an instrument used to measure the specific gravity of liquids; that is, the ratio of the density of the liquid to the density of water.

Hydrometry
Hydrometry is the monitoring of the components of the hydrological cycle including rainfall, groundwater characteristics, as well as water quality and flow characteristics of surface waters

Hydron
Hydron has the following meanings:* Hydron , a positive hydrogen cation* Hydron , a character in the He-Man universe* Hydron , a Chinese brand of eye drops for lenses

Hydron (chemistry)
In chemistry, a hydron is the general name for a cationic form of atomic hydrogen : most commonly a "proton". However, hydron includes cations of hydrogen regardless of their isotopic composition: thus it refers collectively to protons , deuterons , and tritons

Hydrophobia
Hydrophobia or hydrophobe may refer to:* Rabies, especially a set of symptoms of the later stages of an infection, in which the victim has difficulty swallowing, shows panic when presented with liquids to drink, and cannot quench his or her thirst.

Hydrophobia (video game)
Hydrophobia is a survival-adventure video game developed and published by Dark Energy Digital for Microsoft Windows, the PlayStation 3 and Xbox Live Arcade. The game was released for Xbox Live Arcade on September 29, 2010 as part of Xbox Live's 'Games Feast' promotion, marking the first of three episodes. The PC version was released on May 9, 2011

Hydroplane
A hydroplane is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy.

Hydroponics
Hydroponics is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite, gravel, mineral wool, or coconut husk.Researchers discovered in the 18th century that plants absorb essential mineral nutrients as inorganic ions in water

Hydros (legendary creature)
Hydros is a venomous snake from Medieval bestiaries. Their poison caused the victim to swell up, and could only be cured with ox dung.

Hydroscope
The word hydroscope is used to mean any of several instruments related to water.One kind is an instrument for seeing below the surface of water, such as a long tube fitted with various lenses so arranged that objects lying at the bottom can be reflected upon a screen on the deck of the ship that carries it

Hydrospace
The Hydrospace is the world's first stand-up four-stroke jet ski, or personal watercraft. It was introduced in October 2005 by Hydrospace. In 2007, Hydrospace changed their name to HSR-Benelli following the acquisition of Benelli Motori .The company originated in Pöchlarn, Austria, with sales networks

Hydrosphere
A hydrosphere in physical geography describes the combined mass of water found on, under, and over the surface of a planet.

Hydroxide
Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and a hydrogen atom held together by a covalent bond, and carrying a negative electric charge. It is an important but usually minor constituent of water. It functions as a base, as a ligand, a nucleophile, and a catalyst

Hydroxy
Hydroxy can refer to:* In chemical nomenclature, the prefix "hydroxy-" shows the presence of a hydroxyl functional group '* An abbreviation for the medication hydroxyzine, which is commonly sold under the brand names Atarax, Ucerax, Serecid, and Vistaril* Hydroxy gas: A nickname for oxyhydrogen, a combination of hydrogen and oxygen gas produced from the electrolysis of water

Hydroxybutyric acid
Hydroxybutyric acid is a group of four-carbon organic compounds that have both hydroxyl and carboxylic acid functional groups. They can be viewed as derivatives of butyric acid

Hydroxyl
A hydroxyl is a chemical group containing an oxygen atom covalently bonded with a hydrogen atom. In inorganic chemistry, the hydroxyl group is known as the hydroxide ion, and scientists and reference works generally use these different terms though they refer to the same chemical structure in different chemical combinations.The neutral form of the hydroxyl group is a hydroxyl radical

Hydroxymethyl
Hydroxymethyl in the field of chemistry, particularly in organic chemistry, is the name for a substituent with the structural formula -CH2-OH. The hydroxymethyl group consists of a methylene group connected to a hydroxy group. This makes the hydroxymethyl group an alcohol

Hydroxypethidine
Hydroxypethidine is an opioid analgesic that is an analogue of pethidine . Hydroxypethidine is significantly less potent than meperidine as an analgesic, although it also has NMDA antagonist properties like its close relative ketobemidone.Hydroxypethidine has similar effects to other opioids, and produces analgesia, sedation and

Hydrozoa
Hydrozoa are a taxonomic class of very small, predatory animals which can be solitary or colonial and which mostly live in saltwater. A few genera within this class live in freshwater

Hydrus
Hydrus is a small constellation in the southern sky, created in the sixteenth century. Its name means "male water snake", and it should not be confused with Hydra, a much larger constellation which represents a female water snake.-History:

Hydrus (legendary creature)
The Hydrus is a creature from Medieval bestiaries. They were said to be found in the Nile River. While in the Nile, a crocodile would roll the hydrus in the mud before eating the smaller creature. However, once inside the crocodile's stomach, the hydrus would burst free from the stomach lining

HYDRUS (software)
Hydrus is a suite of Windows-based modeling software that can be used for analysis of water flow, heat and solute transport in variably saturated porous media . HYDRUS suite of software is supported by an interactive graphics-based interface for data-preprocessing, discretization of the soil profile, and graphic presentation of the results

Hyena
Hyenas or Hyaenas are the animals of the family Hyaenidae of suborder feliforms of the Carnivora. It is the fourth smallest biological family in the Carnivora , and one of the smallest in the mammalia

Hyena (song)
"Hyena" is the forth major and 12th overall single released by The Gazette. It is their lone single of 2007. This was released in two different versions: a Optical Impression edition and a Auditory Impression edition. The CD+DVD edition comes with a DVD of the title song's PV, while the CD only edition comes with the B-side song "Defective Tragedy"

Hyena (soundtrack)
Hyena is the name of a soundtrack in 2007 for the tvN drama Hyena featuring Kim Min Jong and Yoon Da Hoon.-Track listing:# The Night Chicago Died - Super Junior - K.R.Y.# Go! Go! - The TRAX# 한 사람만을 - Super Junior - K.R.Y.

Hygiene
Hygiene refers to the set of practices perceived by a community to be associated with the preservation of health and healthy living. While in modern medical sciences there is a set of standards of hygiene recommended for different situations, what is considered hygienic or not can vary between different cultures, genders and etarian groups

Hygrometer
A hygrometer is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed

Hymen
The hymen is a membrane that surrounds or partially covers the external vaginal opening. It forms part of the vulva, or external genitalia. The size of the hymenal opening increases with age. Although an often practiced method, it is not possible to confirm with certainty that a girl or woman is a virgin by examining her hymen

Hymen (disambiguation)
The hymen is a fold of mucous membrane which surrounds or partially covers the external vaginal opening.Hymen may also refer to:* Hymen , a god of marriage ceremonies in Greek mythology* Hymen Records, an imprint of the Ant-Zen record label

Hymenaeus
Hymenaeus may refer to one of the following:* Hymenaios, a deity in Greek mythology* Hymenaeus , a heretical teacher in Ephesus* Grady McMurtry, also known as Hymenaeus Alpha

Hymenaeus (Ephesian)
Hymenaeus was an early Christian from Ephesus, an opponent of the apostle Paul, who associates him with Alexander and Philetus.In 1 Timothy 1:20, Hymenaeus is included in the "some" who had put away faith and a good conscience and who had made shipwreck concerning faith

Hymenoptera
Hymenoptera is one of the largest orders of insects, comprising the sawflies, wasps, bees and ants. There are over 130,000 recognized species, with many more remaining to be described. The name refers to the heavy wings of the insects, and is derived from the Ancient Greek ὑμήν : membrane and πτερόν : wing

Hymn
A hymn is a type of song, usually religious, specifically written for the purpose of praise, adoration or prayer, and typically addressed to a deity or deities, or to a prominent figure or personification

Hymn (Moby song)
"Hymn" is a song by American electronica musician Moby, released as the first single from his 1995 album Everything Is Wrong. The single peaked at number 31 on the UK Singles Chart.

Hymnology
Hymnology is the scholarly study of religious song, or the hymn, in its many aspects, with particular focus on choral and congregational song. It may be more or less clearly distinguished from hymnody, the creation and practice of such song

Hymns (2nd Chapter of Acts album)
-Track listing:# All Creatures Of Our God And King - 2:58# My Jesus I Love Thee - 4:52# Great Is Thy Faithfulness - 4:04# Joyful, Joyful, We Adore Thee - 2:40# Crown Him With Many Crowns - 3:46# Take My Life And Let It Be - 1:45# Holy, Holy, Holy - 3:47

Hymns (band)
Hymns is an indie rock band based in Brooklyn, NY. Originally consisting of North Carolina natives Brian Harding and Jason Roberts , the band picked up Texas-based rockers Tony Kent and Matt Shaw upon arriving in NYC

Hymns (Loretta Lynn album)
Hymns is a 1965 Gospel album by American country singer-songwriter, Loretta Lynn.This was Lynn's first Gospel album of her career. The album was a pick of 12 Gospel and Inspirational music songs that were either popular over the years or were written by Lynn herself for this album

Hymns (Tennessee Ernie Ford album)
Hymns is an album recorded by Tennessee Ernie Ford that was released in 1956. It was the second best selling record in the United States in 1957. The album is one of the best selling of all time and spent 277 weeks on the Billboard 200.

Hyoid bone
The hyoid bone is a horseshoe-shaped bone situated in the anterior midline of the neck between the chin and the thyroid cartilage. At rest, it lies at the level of the base of the mandible in the front and the third cervical vertebra behind.Unlike other bones, the hyoid is only distantly articulated to other bones by muscles or ligaments

Hyoscyamine
Hyoscyamine is a tropane alkaloid. It is a secondary metabolite found in certain plants of the Solanaceae family, including henbane , mandrake , jimsonweed , tomato and deadly nightshade

Hypaethral
Hypaethral is an ancient temple with no roof. It has instead a hypaethros or hypaethral opening. It was described by the Roman architect Vitruvius in his treatise On Architecture written for the emperor Caesar Augustus probably about 15 BC

Hypallage
Hypallage is a literary device that is the reversal of the syntactic relation of two words .One kind of hypallage, also known as a transferred epithet, is the trope or rhetorical device in which a modifier, usually an adjective, is applied to the "wrong" word in the sentence

Hype
Hype may refer to:*A media circus*Hype , 1981 album by Robert Calvert*Hype , American comedy television series*Hype!, documentary about the popularity of grunge rock in the early to mid 1990

Hype (album)
Hype is a 1981 album by singer Robert Calvert, the former frontman of British space-rock band Hawkwind.It is subtitled The Songs Of Tom Mahler as a tie-in to Calvert's only published novel Hype, the novel being a fictional account of the rise and death of a rock star.The musicians used for the recording mainly came from the band Bethnal who Calvert befriended during their

Hype (TV series)
Hype is a sketch comedy television series on The WB Television Network. Most of the central jokes making fun of celebrities in the news at the time

Hyperacidity
Hyperacidity, also known as acid dyspepsia is the condition of excreting more than the normal amount of hydrochloric acid in the stomach.Some causes for hyperacidity are peptic ulcers, gastroesophageal reflux disease, stomach cancer and certain types of diet that contains spicy food.Hyperacidity or acid dyspepsia simply means increase of acidity in the stomach

Hyperactive (disambiguation)
Hyperactive describes someone or something exhibiting hyperactivity.Hyperactive may also refer to:*"Hyperactive!", a song by Thomas Dolby from The Flat Earth*"Hyperactive", a song by Robert Palmer from Riptide

Hyperactive (song)
"Hyperactive!" is a single by British musician Thomas Dolby, taken from his second album The Flat Earth, released in 1984. Additional vocals were provided by Louise Ulfstedt.

Hyperbaton
Hyperbaton is a figure of speech in which words that naturally belong together are separated from each other for emphasis or effect. This kind of unnatural or rhetorical separation is possible to a much greater degree in highly inflected languages, where sentence meaning does not depend closely on word order