Sigmoid
Encyclopedia
Sigmoid means resembling the lower-case Greek letter sigma
(ς) or the Latin letter S
. Specific uses include:
Sigma
Sigma is the eighteenth letter of the Greek alphabet, and carries the 'S' sound. In the system of Greek numerals it has a value of 200. When used at the end of a word, and the word is not all upper case, the final form is used, e.g...
(ς) or the Latin letter S
S
S is the nineteenth letter in the ISO basic Latin alphabet.-History: Semitic Šîn represented a voiceless postalveolar fricative . Greek did not have this sound, so the Greek sigma came to represent...
. Specific uses include:
- Sigmoid functionSigmoid functionMany natural processes, including those of complex system learning curves, exhibit a progression from small beginnings that accelerates and approaches a climax over time. When a detailed description is lacking, a sigmoid function is often used. A sigmoid curve is produced by a mathematical...
, a mathematical function - Sigmoid colonSigmoid colonThe sigmoid colon is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 40 cm...
, part of the large intestine or colon