FROM STRONG’S GREEK DICTIONARY (1890)

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

aphthartos ἄφθαρτος — af'-thar-tos — from 1 (as a negative particle) and a derivative of 5351; undecaying (in essence or continuance):--not (in-, un-)corruptible, immortal.

see GREEK for 1

see GREEK for 5351