Lexical Definition

‎τυφλόω‎ typhlóō (toof-lo'-o) to blind G:V
from ‎τυφλός‎

blind.

Usage: 3 forms in 4 verses
Form Translated As     In Verse(s)
ἐτύφλωσεν has blinded 2Cor.4.41John.2.11
τετύφλωκεν He has blinded John.12.40
ετυφλώθησαν were blinded LXX.Isa.42.19

Abbott-Smith

τυφλόω, -ῶ (< τυφλός), [in LXX: Is 42:19 (עִוֵּר), To 7:7 א, Wi 2:21 א * ;]
to blind, make blind: metaph., Jo 12:40 (LXX, καμμύω), II Co 4:4, I Jo 2:11.†

Abbott-Smith References

Book Refs
Isaiah 42:19
John 12:40
2 Corinthians 4:4
1 John 2:11

Liddell-Scott-Jones

τυφλόω-ω,

blind, make blind, τινα [Refs 5th c.BC+]; ὄμματα, ὄψιν, [Refs 5th c.BC+]:—passive, to be blinded, to be or become blind, [Refs 5th c.BC+]; ἕλκος τυφλωθέν a blinding wound (passive of τυφλόωω ἕλκος inflict a blinding wound), [Refs 5th c.BC+]

__2 metaphorically, blind, baffle, [Refs 5th c.BC+]
__II make blind or without passage, stop up, τὰς διόδους ἁμάξαις [Refs 4th c.BC+]; τ. ὀφθαλμοὺς [ἀμπέλου] [Refs]makeit cease to yield milk, [Refs 2nd c.AD+]:—passive, βλάστησις τυφλουμένη [Refs 4th c.BC+]:—also in middle, τυφλώσατο νηδύς [Refs 2nd c.BC+]