A.act of thinking, reflection, cogitation (“συντονία διανοίας” Pl.Def.414a); “ἄξιον ἐννοίας” Id.Lg.657a,al.
2. notion, conception, “χρόνου ἔννοια” Id.Ti.47a; “ἐν ταῖς περὶ τὸ ὂν . . ἐννοίαις” Id.Phlb. 59d; ἔ. λαβεῖν to form an idea, opp. αἴσθησιν λαβεῖν, Id.Phd.73c; “τοῦ καλοῦ ἔ. ἔχειν” Arist.EN1179b15; “ἐννοίας χάριν λέγειν” Id.Metaph. 1073b12; ἔννοιαι, opp. φαντασίαι, αἰσθήσεις, Id.MA701b17; “κατὰ ἀθρόαν ἔ.” Epicur.Ep.1p.23U. (but κατὰ πᾶσαν ἔ. θυμοῦ every kind, variety of anger, Phld.Ir.p.90 W.); “δοξαστικαὶ ἔ.” Epicur.Sent.24; “εἰς ἔ. ἔρχεσθαί τινος” Plb.1.57.4; εἰς ἔ. τινὸς ἄγειν τινά ib.49.10; ἡ κοινὴ ἔ. the common notion, Id.10.27.8; κοιναὶ ἔ. axioms, heading in Euc.; general ideas, Chrysipp.Stoic.2.154, etc.; ψιλὴ ἔ. mere, i.e. vague, notion, Simp. in Ph.18.1.
3. intent, E.Hel.1026; ἔννοιαν λαβεῖν form a design, Id.Hipp.1027; intention of a testator, Is.1.13; “ἔ. ἔχειν περί τι” Pl.Lg.769e; ἔ. ἐμποιεῖν put an idea into one's head, Isoc.5.150; “ἔ. ἐμπίπτει τινί” X.An.3.1.13.
II. sense of a word, D.C.69.21.