Sorothaptic is a name coined by Catalan scholar Joan Coromines

Joan Coromines

Joan Coromines i Vigneaux was a linguist who made important contributions to the study of Catalan, Spanish and other Romance languages....

 for the hypothetical language of the presumably Indo-European

Indo-European

Indo-European may refer to:* Indo-European languages** Aryan race, a 19th century and early 20th century term for those peoples who are the native speakers of Indo-European languages...

, but pre-Celtic

Celtic languages

The Celtic languages are descended from Proto-Celtic, or "Common Celtic"; a branch of the greater Indo-European language family...

, Bronze Age

Bronze Age

The Bronze Age is a period characterized by the use of copper and its alloy bronze as the chief hard materials in the manufacture of some implements and weapons. Chronologically, it stands between the Stone Age and Iron Age...

 people of the Urnfield culture

Urnfield culture

The Urnfield culture was a late Bronze Age culture of central Europe. The name comes from the custom of cremating the dead and placing their ashes in urns which were then buried in fields...

 in the Iberian Peninsula

Iberian Peninsula

The Iberian Peninsula , sometimes called Iberia, is located in the extreme southwest of Europe and includes the modern-day sovereign states of Spain, Portugal and Andorra, as well as the British Overseas Territory of Gibraltar...

 (Price 2000:449).

Coromines used the concept of Sorothaptic to explain problematic words in the Iberian Romance languages

Iberian Romance languages

The Iberian Romance languages or Ibero-Romance languages are the Romance languages that developed on the Iberian Peninsula, an area consisting primarily of Spain, Portugal, and Andorra....

. He identified the language with inscriptions on lead tablets, ca. 2nd century CE, found at Amélie-les-Bains on the Catalonian–French border; these include some Latin but also a non-Latin and non-Celtic component that Coromines believed to be Sorothaptic.