Extended Strong's Greek Lexicon (Abbott-Smith based)
sister
Usage: ἀδελφή, -ῆς, ἡ (ἀδελφός), [in LXX for אָהוֹת ;] a sister: Mat.19:29, al.; metaphorically (MM, VGT, see word), of a member of the Christian community: Rom.16:1, 1Co.7:15 Jas.21:15, al. (AS)