Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A crystalline neurotoxin found in the venom of the rattlesnake Crotalus durissus subsp. terrificus.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin Crotalus, rattlesnake genus (from Latin crotalum, kind of rattle or castanet, from Greek krotalon, clapper, from krotein, to strike, beat) + toxin.]

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