G3574
νυχθήμερον
a night and a day
νυχθήμερος, -α, -ον (νύξ, ἡμέρα, see B1., § 28, 4), lasting a night and a day; as subst., (τὸ) ν., a night and a day: 2Co.11:25 (pl., Or. Sib., 8, 203).† (AS)
The KJV translates G3574 in the following manner:
day (2x)
Full Thayer's lexicon entry
νυχθήμερον — nychthḗmeron
νυχθήμερον, νυχθημερου, τό (νύξ and ἡμέρα), a night and a day, the space of twenty-four hours: 2Co 11:25. (Alex. Aphr.; Geoponica) Cf. Sturz, De dial. Mac. etc., p. 186; (Sophocles Lexicon, under the word; cf. Winer's Grammar, 25).
1 occurrence