Strong’s Greek
G1626 — ektroma
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἔκτρωμα
ektroma — pronounced ek'-tro-mah
from a comparative of 1537 and titrosko (to wound); a miscarriage (abortion), i.e. (by analogy) untimely birth:--born out of due time. see GREEK for 1537
1 occurrence in the KJV.
1 Corinthians 15:8
And last of all he was seen of me also, as of one born out of due time.