Lexical Definition

‎φωτεινός‎ phōteinós (fo-ti-nos') bright ^G:A
from ‎φῶς‎

bright, full of light.

• lustrous, i.e. transparent or well-illuminated (figuratively)

Abbott-Smith

** φωτεινός (WH, φωτινός), ή, όν (< φῶς), [in LXX: Si 17:31 23:19 * ;]
bright, light: νεφέλη, Mt 17:5; opp. to σκοτεινός, Mt 6:22, Lk 11:34, 36.†

Abbott-Smith References

Liddell-Scott-Jones

φωτεινός, ή, όν,

(φῶς) shining, bright, ἥλιος [Refs 5th c.BC+]; σκοτεινὰ καὶ φ. [σώματα[LXX+1st c.AD+]

__II metaphorically, clear, distinct, λόγος [Refs 1st c.AD+]; also in moral sense, [NT+5th c.AD+]

_{LSJ Scripture Refs: Luke.11.34}