Dictionary  te•tro•do•tox•inPronunciation: (te-trō"du-tok'sin), [key] —n. Pharm. a neurotoxin, C11H17N3O3, occurring in a species of puffer fish: ingestion of the toxin is usually rapidly fatal due to heart failure or asphyxiation; used experimentally to block impulse conduction potential in excitable cells. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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