Dictionary entry

δέον

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

δέον, -οντος, τό

(neut. part. of δεῖ, used as subst.), [in LXX Sir prol. 3, 4, I Mac 12:11, II Mac 1:18 *; pl. τὰ δ., for לֶחֶםEx 16:22, III Ki 4:22 (5:2), Pr 24:31 (30:8); שְׁאֵר, Ex 21:10; פַּת־בַּג, Da TH 11:26, To 5:14, II Mac 13:20 *;]

that which is needful, due, proper: δ. ἐστίν (periphr. for δεῖ, q.v.), Ac 19:36, with ellipse of ἐστίν, I Pe 1:6; τὰ μὴ δ., I Ti 5:13.†