| toxicity test | <investigation> Controlled laboratory test to determine the toxicity of a chemical to an organism in terms of specific chemical concentrations. An acute toxicity test establishes the concentration required to kill a predetermined proportion of test organisms within a relatively short period of time, typically 4 days or less. A chronic toxicity test reveals the effects of a sublethal concentration applied throughout all or part of the life cycle. (12 Jan 1998) |
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| toxicity tests | Tests that determine the toxicity of a substance. These include tests of clinical drugs, foods, environmental pollutants, etc. (12 Dec 1998) |
| toxico- | Poison, toxin. Origin: G. Toxikon, bow, hence (arrow) poison (05 Mar 2000) |
| toxicodendron | A genus (formerly rhus) of shrubs, vines, or trees that yields a highly allergenic oleoresin which causes a severe contact dermatitis. The most toxic species are toxicodendron vernix (poison sumac), t. Diversilobum (poison oak), and t. Radicans (poison ivy). T. Vernicifera yields a useful varnish from which certain enzymes (laccases) are obtained. (12 Dec 1998) |
| toxicoderma | Any skin disease caused by a poison or by a toxin-producing microorganism. Synonym: toxicodermatosis. Origin: toxico-+ G. Derma, skin (05 Mar 2000) |
| toxicodermatitis | Inflammation of the skin caused by the action of a poison. (05 Mar 2000) |
| toxicodermatosis | Any skin disease caused by a poison or by a toxin-producing microorganism. Synonym: toxicodermatosis. Origin: toxico-+ G. Derma, skin (05 Mar 2000) |
| toxicogenic | 1. Producing a poison. 2. Caused by a poison. Origin: toxico-+ G. -gen, producing (05 Mar 2000) |
| toxicogenic conjunctivitis | A conjunctivitis caused by medicine or toxin instilled into the conjunctival sac. Synonym: toxicogenic conjunctivitis. (05 Mar 2000) |
| toxicoid | Having an action like that of a poison; temporarily poisonous. Origin: toxico-+ G. Eidos, resemblance (05 Mar 2000) |
| toxicokinetics | <study> A subfield of toxicology that studies how toxins are absorbed by, metabolised by, and eliminated from the bodies of living things. (09 Oct 1997) |
| toxicologic | Pertaining to toxicology. (18 Nov 1997) |
| toxicological | Of or pertaining to toxicology. Toxicolog"ically. Origin: Cf.F. Toxicologique. Source: Websters Dictionary (01 Mar 1998) |
| toxicologist | One versed in toxicology; the writer of a treatise on poisons. Source: Websters Dictionary (01 Mar 1998) |
| toxicology | <study> The scientific study of the chemistry, effects, and treatment of poisonous substances. (09 Oct 1997) |