proēgomō

προηγ-έομαι,
go first and lead the way, Refs 5th c.BC+; τινι for a person, i.e. guide him, τῷ θεῷ Refs 5th c.BC+; π. τὴν [ὁδόν] Refs; of troops, form the van, Refs; π. πᾶσι [τοῖς ποσίν] to have all in front, Refs 4th c.BC+
b precede logically, τινος Refs 2nd c.AD+
2 with genitive, take the lead of, τῶν προόδων ἄλλους προόδους.. προηγεῖσθαι Refs 5th c.BC+; of the planets in retrograde motion, get ahead of, ἀπλανῶν ἀστέρων NT+1st c.BC+infinitive, προήγημαι τὴν τούτων ἐπίδοσιν ποήσεσθαι have taken the initiative in.., Refs 1st c.BC+
3 of things, τὸ πῦρ μὲν ἀπὸ τούτων τῶν ἱερῶν προηγεῖται goes before, precedes, Refs 5th c.BC+
4 present participle προηγούμενος, η, ον, going first, τὸ π. στράτευμα the van, opposed to οὐρά, Refs 5th c.BC+; preceding, {προηγεμών}, Refs 1st c.BC+
4.b in Mathematics texts, τὰ π. forward points, i.e. those lying on the same side of the radius vector of a spiral as the direction of its motion, Refs 3rd c.BC+
4.c Astron., τὰ π. ζῴδια signs leading in the daily movement of the heavens, i.e. westerly signs, opposed to ἑπόμενα, Refs 1st c.BC+
4.d τὰ π. initial data, premisses, Refs 2nd c.BC+; π. οὐσία τοῦ ἀγαθοῦ given, i.e. external to the soul, Refs 2nd c.AD+; τὰ π. originals of paintings, Refs 4th c.BC+
4.e leading, principal, κατὰ π. λόγον according to a guiding principle, Refs 4th c.BC+; ὁ π. λόγος, τὸ π. ἔργον, Refs 2nd c.AD+; σύν τινι προηγουμένῳ in conjunction with a purpose, Refs 2nd c.AD+; so in in Mathematics texts, π. θεώρημα leading theorem, opposed to ἀντίστροφον, Refs 5th c.AD+
4.f in Medicine texts, π. αἴτιον predisposing cause, Refs 1st c.AD+; π. αἰτίαι antecedent causes, Refs 3rd c.BC+
5 aorist participle, ὁ -ησάμενος the former ἡγεμών, Refs 4th c.AD+

H. G. Liddell, R. Scott, H. S. Jones, A Greek-English Lexicon (9th ed., 1925–1940) — digitised by the Perseus Digital Library and corrected and expanded by Tyndale House, Cambridge, via STEPBible-Data's TFLSJ table, CC BY 4.0. Covers all of Greek literature, not just the Bible.