ketamine: a general anesthetic and tranquilizer (not a barbiturate) that is administered intravenously or intramuscularly; used mainly by veterinarians or for minor surgery with geriatric or pediatric patients; taken in large doses it causes hallucinations similar to those associated with the use of PCP
general anesthetic: an anesthetic that anesthetizes the entire body and causes loss of consciousness
spermatid: an immature gamete produced by a spermatocyte; develops into a spermatozoon