Extended Strong's Greek Lexicon (Abbott-Smith based)
to thicken
Usage: παχύνω (παχύς, thick) [in LXX: Deu.32:15, Isa.6:10 (שָׁמֵן), al. ;] to thicken, fatten; pass., to grow fat. Metaphorical, to make dull or stupid (τ. ψυχάς, Rut.); pass., to wax gross: ἡ καρδία„ Mat.13:15, Act.28:27" (LXX) .† (AS)