| 单词 | median lethal dose |
| 释义 | median lethal dosenounthe 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 Origin of median lethal doseFirst recorded in 1945–50 Words nearby median lethal dosemedial supraclavicular nerve, median, median artery, median bar of Mercier, median groove of tongue, median lethal dose, median line, median longitudinal raphe of tongue, median nerve, median plane, median rhinoscopy Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for median lethal dosemedian lethal dose mean lethal dosenounthe amount of a drug or other substance that, when administered to a group of experimental animals, will kill 50 per cent of the group in a specified time the amount of ionizing radiation that will kill 50 per cent of a population in a specified time Abbreviation: LD 50 Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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