The American Heritage® Dictionary of the English Language, 4th Edition
n. A potent neurotoxin produced by certain dinoflagellates that accumulates in shellfish feeding on these organisms and consequently causes food poisoning in humans who eat the shellfish.
n. A neurotoxin, produced by some dinoflagellates, that can accumulate in mollusks and cause subsequent food poisoning in humans
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a powerful neurotoxin produced by certain dinoflagellates found in red tides; it can accumulate in mollusks that feed on the dinoflagellates and cause food poisoning to humans
Word Usage
"The toxin, known as saxitoxin, disrupts normal nerve functions and can cause paralysis and death by respiratory failure within two to 24 hours, Sea Fisheries said in a statement."