Lexical Definition

‎πρωτεύω‎ prōteúō (prote-yoo'-o) be first ^G:V
from ‎πρῶτος‎

have the preeminence.

• to be first (in rank or influence)

Abbott-Smith

πρωτεύω (< πρῶτος), [in LXX: Es 5:11, II Mac 6:18 13:15*;]
to be first, pre-eminent, have the first place: Col 1:18.†

Abbott-Smith References

Liddell-Scott-Jones

πρωτεύω,

(πρῶτος) to be the first, hold first place, [Refs 5th c.BC+]; οἱ πρωτεύοντες the primates or chief men in a city, [Refs 5th c.BC+]; hold position of πρῶτος (which see), [Refs]; π. τοῦ ἔθνους [Refs]

__II with a modal word added, to be first in a thing, καρτερίᾳ [Refs 5th c.BC+]; ἐν τούτοις (i.e. ἐπιτηδεύμασιν) [Refs]
__II.2 with genitive person, to be first of or among, Ἑλλήνων [Refs]; τῶν ῥητόρων [Refs 5th c.BC+]
__III ={προτερέω}, excel, π. τῆς Ἀρτέμιδος ταῖς κυνηγεσίαις [Refs 1st c.BC+]