lethal dose

lethal dose
(LD)
   a measure used in pharmacology to express the percentage of a population killed by a dose of the substance being studied. The measurement is often given as a subscript. For example, the potency of a drug or pesticide is commonly expressed by stating the size of the LD50 dose: the amount of the substance that kills 50% of the test population.

Dictionary of units of measurement. 2015.

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  • Lethal dose — A lethal dose (LD) is an indication of the lethality of a given substance or type of radiation. Because resistance varies from one individual to another, the lethal dose represents a dose (usually recorded as dose per kilogram of subject body… …   Wikipedia

  • lethal dose — mirtinoji dozė statusas T sritis Standartizacija ir metrologija apibrėžtis Viso kūno sugertoji dozė, nuo kurios per 60 dienų miršta 50 % apšvitintų žmonių. Ši dozė turi būti tolygiai pasiskirsčiusi visame kūne ir gaunama per trumpą laiko tarpą.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • lethal dose — mirtinoji dozė statusas T sritis fizika atitikmenys: angl. fatal dose; lethal dose vok. Letaldosis, f; letale Dosis, f; tödliche Dosis, f rus. летальная доза, f; смертельная доза, f pranc. dose létale, f …   Fizikos terminų žodynas

  • lethal dose-50 — LD50; (lethal dose–50) the dose of a toxicant that is fatal to 50 percent of the fish tested over a specified time …   Dictionary of ichthyology

  • lethal dose — noun the dose of a substance or of radiation likely to cause death (sometimes suffixed with a number) A lethal dose 50 will cause the death of 50% of a sample of test animals …   Wiktionary

  • lethal dose — mirtinoji dozė statusas T sritis ekologija ir aplinkotyra apibrėžtis Cheminio ar fizinio agento dozė, nuo kurios organizmai žūsta. Mažiausioji mirtinoji dozė – mažiausias nuodų, jonizuojančiosios spinduliuotės ar kito agento kiekis, nuo kurio… …   Ekologijos terminų aiškinamasis žodynas

  • 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

  • lethal dose — noun the size dose that will cause death (Freq. 1) • Hypernyms: ↑dose, ↑dosage …   Useful english dictionary

  • lethal dose 50 — (LD50) Refers to the dose or number of organisms that will kill 50% of an experimental group of hosts within a specified time period …   Dictionary of microbiology

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