Lexical Definition

‎πρόγονος‎ prógonos (prog'-on-os) parent/ancestor ^G:N-M
from ‎προγίνομαι‎

forefather, parent.

• an ancestor, (grand-)parent

Abbott-Smith

** πρό-γονος, -ον (< προγίνομαι), [in LXX: Es 4:17, Si 8:4, al.;]
1. born before.
2. As subst., in pl., οἱ π., ancestors, forefathers: II Ti 1:3; of living parents (so Plat.), I Ti 5:4.†

Abbott-Smith References

Liddell-Scott-Jones

πρόγονος-ος, ον,

(γίγνομαι, γέγονα) early-born, [ἄρνες], opposed to μέτασσαι, [Refs 8th c.BC+]; first-born, [Refs]

__2 ={ἀπόγονος} 1, uncertain in [Refs 1st c.BC+]
__II forefather, ancestor, [Refs 5th c.BC+]; also of gods or heroes who are the authors or founders of a race, [πρόγονοςε 5th c.BC: Euripides Tragicus “Orestes” 1242; θεοὶ π. 5th-6th c.BC: Plato Philosophus “Euthydemus” 302d ">Refs 5th c.BC+]: also as feminine, π. γυνή [Refs 4th c.BC+] the fathers or founders of a school, [Refs 2nd c.AD+]; ἰὼ πόνοι π. πόνων troubles parents of troubles, [Refs 5th c.BC+]
__III child by a former marriage, step-son, [Refs 5th c.BC+], etc.: feminine, step-daughter, [Refs 5th c.BC+]; rarely προγόνη (which see): irregular superlative προγονέστατος eldest step-son, uncertain in [Refs]