follow Dictionary.com

What does Boxing Day have to do with boxing?

median lethal dose

noun
1.
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: LD 5 0.
Origin
1945-1950
1945-50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for median lethal dose

median lethal dose

noun
1.
the 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
2.
the amount of ionizing radiation that will kill 50 per cent of a population in a specified time
LD50
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
Cite This Source

Word of the Day

Difficulty index for median lethal dose

Few English speakers likely know this word

Word Value for median

9
11
Scrabble Words With Friends