Daily Almanac for
Nov 30, 2009
Search: Infoplease Info search tips
Search: Biographies Bio search tips

Dictionary


me'dian le'thal 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

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

medianmedian plane
    • Cite
    • Print
    • Bookmark

 

Related Content