Dictionary entry

θερμαίνω

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

θερμαίνω

(< θερμός), [in LXX chiefly for חמם;]

to warm, heat; mid., to warm oneself: Mk 14:54, 67, Jo 18:18, 25, Ja 2:16.†