G4115
πλατύνω
to widen
πλατύνω (πλατύς), [in LXX chiefly for רָחַב hi. ;] to make broad, enlarge, extend: with accusative of thing(s), Mat.23:5. Metaphorical (cf. Psa.119:32, al.), pass., ἡ καρδία, 2Co.6:11; ὑμεῖς, 2Co.6:13.† (AS)
The KJV translates G4115 in the following manner:
enlarged (4x), be (2x), broad (2x)
Full Thayer's lexicon entry
πλατύνω — platýnō
πλατύνω; passive, perfect 3 person singular πεπλάτυνται (see μιαίνω); 1 aorist ἐπλατυνθην; (πλατύς); to make broad, to enlarge: τί, Mat 23:5; ἡ καρδία ἡμῶν πεπλάτυνται, our heart expands itself namely, to receive you into it, i. e. to welcome and embrace you in love, 2Co 6:11 (πλατύνειν τήν καρδίαν for לֵב הִרְחִב, to open the heart namely, to instruction, Psalm 118:32 (cf. Winer's Grammar, 30)); πλατύνθητε καί ὑμεῖς, be ye also enlarged in heart, viz. to receive me therein, 2Co 6:13. (Xenophon, Plutarch, Anthol., others.)
3 occurrences
Matthew (1), II Corinthians (2)