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