The word "lipide" , which stems etymologically from the Greek "lipos" (fat), was introduced in 1923 by the french pharmacologist Gabriel Bertrand. Bertrands included in the concept not only the traditional fats (glycerides), but also the "lipoids", with a complex constitution. Despite the word "lipide" was unanimously approved by the international commission of "Société de Chimie Biologique" during the plenary session on the 3rd of July 1923. The word "lipide" has been later anglicized as "lipid" because of its pronunciation ('lɪpɪd). In the french language, the suffixe "-ide", from the ancient greek "-ίδης" (meaning 'son of' or 'descendant of'), is always pronounced (ɪd).