Lexical Definition

‎πρωτότοκος‎ prōtótokos (pro-tot-ok'-os) firstborn ^G:A
from ‎πρῶτος‎ and the alternate of ‎τίκτω‎

firstbegotten(-born).

• first-born (usually as noun, literally or figuratively)

Abbott-Smith

πρωτότοκος, -ον (< πρῶτος, τίκτω), [in LXX chiefly for בְּכוֹר;]
first-born: Lk 2:7; pl., He 11:28. Metaph., of the priority of Christ (originally perh. a Messianic title, cf. Ps 88 (89):28, He 1:6; v. ICC on Col 1:15): He 1:6; π. πάσης κτίσεως, Col 1:15; ἐν πολλοῖς ἀδελφοῖς, Ro 8:29; π. (ἐκ) τ. νεκρῶν, Col 1:18, Re 1:5; pl., of the elect, ἐκκλησία πρωτοτόκων, He 12:23.†

Abbott-Smith References

Liddell-Scott-Jones

πρωτότοκος-ος

(paroxytone), Doric dialect πρᾱτοτόκος, ον, bearing or having borne her first-born, μήτηρ π., of a heifer, [Refs 8th c.BC+]; ὗς, ταὧς, [Refs 4th c.BC+]; of women, [Refs 5th c.BC+]

__II proparoxytone πρωτότοκος, ον, passive,first-born, [LXX+NT+4th c.AD+]; π. ἐγὼ ἢ σύ [LXX]
__II.2 metaphorically, π. πάσης κτίσεως [NT]; of Homer, opposed to Nicander, [Refs]

_{LSJ Scripture Refs: LXX.Gen.22.21 ☩ Luke.2.7 ☩ LXX.Gen.4.4 ☩ LXX.2Kgs.19.43 ☩ Col.1.15}