Lexical Definition

‎ἔκτρωμα‎ éktrōma (ek'-tro-mah) untimely birth ^G:N-N
from a comparative of ‎ἐκ‎ and (to wound)

born out of due time.

• a miscarriage (abortion), i.e. (by analogy) untimely birth

Abbott-Smith

ἔκ-τρωμα, -τος, τό (< ἐκτιτρώσκω, to miscarry), [in LXX: Jb 3:16, Ec 6:3 (נָפַל; also in Aq., Ps 58:9*, Nu 12:12 (מוּת) * ;]
an abortion, an untimely birth (v. Field, Notes, 179): I Co 15:8.†

Abbott-Smith References

Liddell-Scott-Jones

ἔκτρωμα-τρωμα, ατος, τό,

= παιδίον νεκρὸν ἄωρον, [Refs 5th c.AD+]; untimely birth, [NT+4th c.BC+]; as a term of contempt, [Refs]

_{LSJ Scripture Refs: LXX.Job.3.16 ☩ 1Cor.15.8}