Dictionary entry

πλατύνω

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

πλατύνω

(< πλατύς), [in LXX chiefly for רחב hi.;]

to make broad, enlarge, extend: c. acc. rei, Mt 23:5. Metaph. (cf. Ps 118 (119):32, al.), pass., ἡ καρδία, II Co 6:11; ὑμεῖς, II Co 6:13.†