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lethal dose

British

noun

LD. the amount of a drug or other agent that if administered to an animal or human will prove fatal See also median lethal dose

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In some other countries that have legalised assisted dying, euthanasia is permitted, whereby a doctor or nurse administers the lethal dose, usually by injection.

From BBC • Jun. 20, 2025

“We take a different approach where we try to identify the person who furnished the lethal dose and hold them accountable.”

From Los Angeles Times • Mar. 12, 2025

Nearly every state that has MAiD allows terminally ill adults with less than six months to live to ask doctors for a lethal dose of drugs that they can then ingest themselves, typically at home.

From Washington Times • Feb. 22, 2023

When we injected a lethal dose of TNF in mice lacking the two proteins in two specific types of myeloid cells, neutrophils and macrophages, mice had reduced symptoms of sepsis and improved survival.

From Salon • Jan. 1, 2023

Not all robins receive a lethal dose, but another consequence may lead to the extinction of their kind as surely as fatal poisoning.

From "Silent Spring" by Rachel Carson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023