Lexical Definition

‎ἰδέα‎ idéa (id-eh'-ah) appearance G:N-F
from ‎εἴδω‎

countenance.

Usage: 3 forms in 5 verses
Form Translated As     In Verse(s)
ιδέαν his shape LXX.Gen.5.3
ιδέαι our shape LXX.Dan.1.13
shapes LXX.Dan.1.13
their shape LXX.Dan.1.15
εἰδέα appearance Matt.28.3

Abbott-Smith

ἰδέα, -ας, ἡ, v.s. εἰδέα.

Liddell-Scott-Jones

ἰδέα [],

Ionic dialect ἰδέη, , (ἰδεῖν) form, ἰδέᾳ καλός [Refs 5th c.BC+]; opposed to χρῶμα, [Refs]; opposed to μέγεθος, [NT+5th c.BC+]; of the elementary shapes, ἄτομοι ἰδέαι [Refs 4th c.BC+]; of the four elements, Philistion cited in [Refs 1st c.AD+]

__2 semblance, opposed to reality, γνώμην ἐξαπατῶσ᾽ ἰδέαι outward appearances cheat the mind, [Refs 6th c.BC+]
__3 kind, sort, φύλλα τοιῆσδε ἰδέης [Refs 5th c.BC+]; φύσιν παρέχονται ἰδέης τοιήνδε [οἱ ποτάμιοι ἵπποι] [Refs]; ἐφρόνεον διφασίας . they conceived two modes of acting, [Refs]; τὰ ὄργι᾽ ἐστὶ τίν᾽ . ἔχοντά σο; what is their nature or fashion? [Refs 5th c.BC+]; ἑτέραν ὕμνων . [Refs 5th c.BC+]; καινὰς . εἰσφέρειν new forms of comedy, [Refs]; τίς . βουλεύματο; [Refs]; πᾶσα . θανάτου every form of death, or death in every form, [Refs 5th c.BC+]; πᾶσαν ἰδέαν πειράσαντες having tried every way, [Refs]; τῇ αὐτῇ . [Refs]; οὐκ ἐν ταῖς αὐταῖς . not in the same relations, [Refs 5th c.BC+]. into one kind of existence, [ἰδέας τοῦ βίου 4th-3rd c.BC: Epicurus Philosophus “Fragmenta” 196. ">Refs 5th c.BC+]
__4 especially in Rhet., etc., of literary form, ἀμφοτέραις ταῖς ἰδέαις κατεχρήσαντο πρὸς τὴν ποίησιν [Refs 5th c.BC+]; ἰαμβικὴ . [Refs 4th c.BC+]; ἐν τῷ λέγειν . [Refs 5th c.BC+]
__4.b style, Πλατωνική, Δημοσθενικὴ ., [Refs 5th c.AD+]
__4.c a quality of style (e.g. σαφήνεια, γοργότης, etc.), [Refs 2nd c.AD+]
__II in Logic,= εἶδος, class, kind: hence, principle of classification, ἔφησθα.. μιᾷ ἰδέᾳ τά τε ἀνόσια ἀνόσια εἶναι καὶ τὰ ὅσια ὅσια [Refs 5th c.BC+]
__II.2 plural in Platonic Philosophy, ideal forms, archetypes, τὰς.. . νοεῖσθαι μέν, ὁρᾶσθαι δ᾽ οὔ [Refs 5th c.BC+]
__II.3 notion, idea, προάγειν τὸν ἀποκρινόμενον ἐπὶ τὴν . ἀγνοουμένου πράγματος [ἰδέα in later Greek, as “PGen.” 16.17 (3rd c.AD), variant in NT.Matt.28.3.) ">NT+4th c.BC+]

LSJ Scripture Refs: Matt.28.3Matt.28.3