FROM STRONG’S GREEK DICTIONARY (1890)

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

apostolos ἀπόστολος — ap-os'-tol-os — from 649; a delegate; specially, an ambassador of the Gospel; officially a commissioner of Christ ("apostle") (with miraculous powers):--apostle, messenger, he that is sent.

see GREEK for 649