Dictionary entry

πανοικεί

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

πανοικεί (Rec., LTr., -κί),

adv.

(< πᾶς, οἶκος), a word rejected by strict Atticists, though found once in Plat. (Eryx., 392 c); [in LXX: Ex 1:1 (בַּיִת), III Mac 3:27 (where A in each case reads -κίᾳ, the Attic form, cf. Ge 50:8, al.)*;]

with all the household: Ac 16:34.†