Lexical Definition

‎καυτηριάζω‎ kautēriázō (kow-tay-ree-ad'-zo) to brand ^G:V
from a derivative of ‎καίω‎

sear with a hot iron.

• to brand ("cauterize"), i.e. (by implication) to render unsensitive (figuratively)

Abbott-Smith

*† καυστηριάζω (Rec. καυτηρ-, and so usually in Gk. writers, v. Soph., Lex., s.v.),
to mark by branding, brand (AV, scar, but v. CGT, in l.): metaph., pass. pf. ptcp., I Ti 4:2 (cf. καυτήριον, IV Mac 15:22*).†

Abbott-Smith References

Liddell-Scott-Jones

καυτηριάζω-τηριάζω,

brand, [Refs 1st c.BC+]:—passive, [καυτηριάζωτηριασμένοι τὴν ἰδίαν συνείδησιν NT.1Tim.4.2. ">NT]

_{LSJ Scripture Refs: 1Tim.4.2}