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lethal dose

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noun

the amount of a drug or other agent that if administered to an animal or human will prove fatalAbbreviation: LD See also median lethal dose (def. 1)

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
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

Medical definitions for lethal dose

lethal dose

n.

The dose of a chemical or biological preparation that is likely to cause death.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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