Origin: L(Ec) < Gr(Ec) (Evangelion) dia tessarōn, lit., (Gospel) through four, title of Tatian's harmony of four Gospels (2d c.) < Gr dia, through + tessarōn, gen. of tessares, four < IE base *kwetwer-, four
See diatessaron in American Heritage Dictionary 4
Origin: Middle English, interval of a fourth
Origin: , from Latin diatessarōn, made of four (ingredients)
Origin: , from Greek dia tessarōn, out of four
Origin: : dia, according to; see dia-
Origin: + tessarōn
Origin: , genitive of tessares, four; see kwetwer- in Indo-European roots.