The state of being poisonous.
- oxygen t. 1. a body disturbance resulting from breathing high partial pressures of oxygen; characterized by visual and hearing abnormalities, unusual fatigue while breathing, muscular twitching, anxiety, confusion, incoordination, and convulsions; can occur when excessive quantities of oxygen are administered in patients (such as adult respiratory distress syndrome), resulting in worsening of pulmonary infiltrates and clinical deterioration; although the mechanism for development of the condition is obscure, a disruption of enzymatic activity is likely, perhaps as a result of free radical formation. Cf.:retrolental fibroplasia. 2. exposure of the lungs to greater than 60% oxygen for periods exceeding 24–48 hours can lead to severe, irreversible pulmonary fibrosis. SYN: oxygen poisoning.

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tox·ic·i·ty täk-'sis-ət-ē n, pl -ties the quality, state, or relative degree of being toxic or poisonous

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the degree to which a substance is poisonous. See also LD50.

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tox·ic·i·ty (tok-sisґĭ-te) 1. the quality of being poisonous. 2. the degree of virulence of a toxic microbe or of a poison.

Medical dictionary. 2011.

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  • toxicity — UK US /tɒkˈsɪsəti/ noun [U] ► the fact that something is poisonous or the degree to which it is poisonous: »The toxicity of the drug severely limits its use. »The paint has a very low toxicity to children and household pets …   Financial and business terms

  • Toxicity — Tox*ic i*ty, n. The quality or state of being toxic or poisonous; poisonousness. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • toxicity — 1881, from TOXIC (Cf. toxic) + ITY (Cf. ity) …   Etymology dictionary

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  • Toxicity II — Este artículo o sección necesita referencias que aparezcan en una publicación acreditada, como revistas especializadas, monografías, prensa diaria o páginas de Internet fidedignas. Puedes añadirlas así o avisar …   Wikipedia Español

  • Toxicity 2 — Steal This Album! Steal This Album! est un album de System of a down lancé en 2002. Les chansons contenues sur cet album sont en partie des chansons destinées à l album précédent (Toxicity) mais rejetées pour diverses raisons. Les morceaux s… …   Wikipédia en Français

  • toxicity — /tok sis i tee/, n., pl. toxicities. the quality, relative degree, or specific degree of being toxic or poisonous: to determine the toxicity of arsenic. [1880 85; TOXIC + ITY] * * * …   Universalium

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