Lexical Definition

‎πλατύνω‎ platýnō (plat-oo'-no) to widen G:V
from ‎πλατύς‎

make broad, enlarge.

Usage: 16 forms in 23 verses
Form Translated As     In Verse(s)
πλατύνουσιν They broaden Matt.23.5
πλατύνου open wide LXX.Prov.24.28
πλατύνθητε do open 2Cor.6.13
πλατύναι May God widen LXX.Gen.9.27
πλατυνώ I widen LXX.Exod.34.24
πλατυνθήσεται it will be widened LXX.Gen.28.14
πλατυνθή widening LXX.Deut.11.16
πλαντύνοντοσ one widening LXX.Prov.20.19
πλάτυνον Widen LXX.Ps.81.10 • LXX.Isa.54.2
πεπλάτυνται has been expanded 2Cor.6.11
επλατύνθη he was widened LXX.Deut.32.15
was widened LXX.1Sam.2.1 • LXX.Jer.51.58
επλάτυνεν widen LXX.Jer.2.24
widened LXX.Isa.5.14
επλάτυνε lord widened LXX.Gen.26.22
widened LXX.Hab.2.5
επλάτυνασ you widened LXX.2Sam.22.37 • LXX.Ps.18.36 • LXX.Ps.119.32
επλάτυναν they widened LXX.Ps.35.21
επλάτυνάσ he widened LXX.Ps.4.1

Abbott-Smith

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.†

Abbott-Smith References

Book Refs
Psalms 119:32
Matthew 23:5
2 Corinthians 6:11 · 6:13

Liddell-Scott-Jones

πλατύνω-ω,

(πλατύς) widen, τὰ φυλακτήρια [NT+1st c.AD+]; π. τὸ στῖφος widen it out,[Refs 1st c.BC+] —middle, τὴν γῆν πλατύνεσθαι widen one's territory, [Refs 5th c.BC+]:—passive, grow broad, widen out, [Refs 4th c.BC+]; of the pupils, to be dilated, [Refs 1st c.AD+]is opened, relieved from care, [LXX+NT]

__2 ἐπλατύνθη.. τὸ στόμα μου was opened wide,[LXX] be puffed up,[LXX]:—middle, talk big of oneself, τί πλατύνεαι, ἠλίθιος ὥ; [Refs]
__3 pronounce broadly, τὴν φωνήν [Refs 1st c.AD+]
__4 amplify, τὸν λόγον [Refs 1st c.BC+]:—passive, διήγησις πλατύνεται τρόποις [Refs]: absolutely, use amplification, [Refs 1st c.BC+]

LSJ Scripture Refs: Matt.23.5 ☩ 2Cor.6.11 ☩ LXX.Ps.118.32* ☩ LXX.1Kgs.2.1* ☩ LXX.Deut.11.16