DECREPITATE Meaning of DECREPITATE in English v. 1. tr. roast or calcine (a mineral or salt) until it stops crackling. 2 intr. crackle under heat. Derivatives: decrepitation n. Etymology: prob. mod.L decrepitare f. DE- + L crepitare crackle Oxford English vocab. Оксфордский английский словарь. 2012