FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

marturomai μαρτύρομαι — mar-too'-rom-ahee — middle voice from 3144; to be adduced as a witness, i.e. (figuratively) to obtest (in affirmation or exhortation):--take to record, testify.

see GREEK for 3144