median lethal dose

the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period. Symbol: LD50
[1945-50]

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Universalium. 2010.

Look at other dictionaries:

  • median lethal dose — median lethal dose. См. ЛД50. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • median lethal dose — median lethal dose. = LD50 (см.). (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • median lethal dose — n LD50 * * * (LD50) the amount of pathogenic bacteria, bacterial toxin, or other poisonous substance required to kill half of a group of uniformly susceptible animals, or the amount of ionizing radiation that will kill half of a large group or… …   Medical dictionary

  • Median lethal dose — This article is about the toxicological term. For the album by Mudvayne, see L.D. 50 (album). For other uses, see LD50 (disambiguation). In toxicology, the median lethal dose, LD50 (abbreviation for “Lethal Dose, 50%”), LC50 (Lethal Concentration …   Wikipedia

  • median lethal dose — me′dian le′thal dose′ n. ecl pha the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period Symbol: LD50 …   From formal English to slang

  • median lethal dose — the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period. Symbol: LD50 [1945 50] …   Useful english dictionary

  • median lethal dose — the dose of a chemical which will result in the death of half the fish in a given time period. Abbreviated as LD50 …   Dictionary of ichthyology

  • median lethal dose — noun the dose of ionising radiation, or a chemical, which would kill 50 per cent of a large batch of organisms within a specified period. Abbrev.: LD 50 …   Australian English dictionary

  • Median toxic dose — In toxicology, the median toxic dose (TD50) of a drug or toxin is the dose at which toxicity occurs in 50% of cases. The type of toxicity should be specified for this value to have meaning for practical purposes. Since toxicity need not be lethal …   Wikipedia

  • lethal dose — the amount of an agent, such as a toxin or radiation, that will or may be sufficient to cause death. See also median lethal d. and minimum lethal d. Called also fatal d. Cf. L+ d …   Medical dictionary

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