Webster's Revised Unabridged Dictionary · 1913

Anasthetic

Anasthetic (an`es*thet"ik) , adjective

(a)
(Medicine) Capable of causing anesthesia; as, anasthetic agents.
(b)
(Medicine) Characterized by, or connected with, anesthesia; as, an anasthetic effect or operation.

Also: Anaesthetic, Anesthetic

anasthetic , noun

(Medicine) A substance which produces anesthesia, as chloroform, ether, etc. — AS

Also: anaesthetic, anesthetic