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A poison or poisonous agent.
Poisonous; toxic.


1. a toxic substance; poison
2. a rare word for intoxicant
poisonous; toxic
[C19: from Medieval Latin toxicāre to poison; see toxic]


(ˈtɒk sɪ kənt)

1. poisonous; toxic.
2. a poison.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.toxicant - any substance that causes injury or illness or death of a living organismtoxicant - any substance that causes injury or illness or death of a living organism
substance - a particular kind or species of matter with uniform properties; "shigella is one of the most toxic substances known to man"
atropine - a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides
hyoscyamine - a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract
toxin - a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
Adj.1.toxicant - having the qualities or effects of a poisontoxicant - having the qualities or effects of a poison
toxic - of or relating to or caused by a toxin or poison; "suffering from exposure to toxic substances"


Capable of injuring or killing by poison:
References in periodicals archive ?
TEHRAN (FNA)- Iranian researchers from Isfahan University of Technology used gold nanoparticles and succeeded in the production of a detection kit to find cancerous toxicant in agricultural products.
And we don't know whether it will be possible to scientifically prove that reduced toxicant cigarettes reduce health risks," Dr David O'Reilly, Group Scientific Director at British American Tobacco said.
In mice fed a high-fat diet, the team found no connection between PCB-77 exposure and effects like those seen in the low-fat group, despite the animals' having double the concentration of the toxicant in fat tissue.
ySTANBUL (CyHAN)- The Greenpeace activists on Saturday protested at Kadikoy Baghdad Street in Istanbul against the use of toxicant chemicals in clothing by some world famous clothing brands.
The 29 chapters, contributed by 23 American academics and researchers, provide a general overview, followed by sections covering classes of toxicants, toxicant process in vivo, toxic action, organ toxicity, applied toxicology, environmental toxicology, and new approaches in the field.
Furthermore, he says, when zebra mussels detect a toxicant, they sometimes stop filtering water for days or weeks while the chemical dissipates.
The chemicals lure the flies into the trap, where they are retained and induced to feed on a panel that contains a feeding stimulant and toxicant.
Oxadiazon: 40 pounds; a confirmed carcinogen, birth defects, kidney, liver toxicant
NAMPA) welcomes the California Developmental and Reproductive Toxicant Identification Committee's July 15, 2009 conclusion that bisphenol A (BPA) is not a developmental or reproductive toxicant.
Although environmental health research contributes to understanding key factors relevant to some infectious diseases, environmental health research and practice predominantly focus on chemical and physical agents, in spite of the inherent role of the environment in pathogen dynamics and host response, and the potential for several major toxicant exposures to cause immunotoxic changes in hosts that reduce the threshold for infection, increase the persistence of an infection, increase pathogen shedding, and alter the severity and burden of infections disease.
Statistical data is also provided on the level of intoxicants, carcinogenicity indexes and correlation of toxicant yields.
In one study, ozone appeared to be a culprit behind diminished sperm counts, suggesting that it's a "sperm toxicant," say Rebecca Z.