Extended Strong's Greek Lexicon (Abbott-Smith based)
sect
Usage: αἵρεσις, -εως, ἡ (αἱρέω, -ομαι), [in LXX for נְדָבָה,] __1. capture. __2. choosing, choice (see MM, VGT, see word). __3. that which is chosen, hence, opinion; esp. a peculiar opinion, heresy: 1Co.11:19, Gal.5:20, 2Pe.2:1 R, txt. __4. In late writers (MM, VGT), of a set of persons professing particular principles or opinions, a school, sect, party, faction: Act.5:17 15:5 24:5,14 26:5 28:22, I Co, Ga, II Pe, l.with, R, mg. (Cremer, 614). † (AS)