late 14c., "the Ten Commandments," from L.L. testimonium (Vulgate), along with Gk. to martyrion (Septuagint), translations of Heb. 'eduth "attestation, testimony" (of the Decalogue), from 'ed "witness." Meaning "evidence, statement of a witness" first recorded early 15c., from O.Fr. testimonie (11c.), from L. testimonium "evidence, proof, testimony," from testis "witness" (see testament) + -monium, suffix signifying "action, state, condition."