toxicology

noun

tox·​i·​col·​o·​gy ˌtäk-si-ˈkä-lə-jē How to pronounce toxicology (audio)
: a science that deals with poisons and their effect and with the problems involved (such as clinical, industrial, or legal problems)
toxicologist noun

Did you know?

Even though most of us are aware of toxicology primarily from crime shows on TV, toxicologists actually do most of their work in other fields. Many are employed by drug companies, others by chemical companies. Many work for the government, making sure the public is being kept safe from environmental poisons in the water, soil, and air, as well as unhealthy substances in our food and drugs. These issues often have to do with quantity; questions about how much of some substance should be considered dangerous, whether in the air or in a soft drink, may be left to toxicologists. But occasionally a toxicology task may be more exciting: for instance, discovering that what looked like an ordinary heart attack was actually brought on by a hypodermic injection of a paralyzing muscle relaxant.

Examples of toxicology in a Sentence

Recent Examples on the Web
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Miller Gardner -- the 14-year-old son of former New York Yankees outfielder Brett Gardner -- died from carbon monoxide poisoning, Costa Rican authorities have said citing a new toxicology report. David Brennan, ABC News, 3 Apr. 2025 Miller’s cause of death will not be verified until officials receive the final forensic toxicology results, according to officials. Peter Sblendorio, New York Daily News, 1 Apr. 2025 However, the judge ruled the final autopsy report, toxicology report and depictions of the deceased animal could be released to the public. Lauryn Overhultz, FOXNews.com, 31 Mar. 2025 Her death was ruled an accident, and toxicology results released by the L.A. County Department of Medical Examiner-Coroner found that she was not impaired by drugs or alcohol at the time of her crash. Martha Ross, Mercury News, 29 Mar. 2025 See All Example Sentences for toxicology

Word History

First Known Use

1799, in the meaning defined above

Time Traveler
The first known use of toxicology was in 1799

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Cite this Entry

“Toxicology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/toxicology. Accessed 9 Apr. 2025.

Medical Definition

toxicology

noun
tox·​i·​col·​o·​gy -ˈkäl-ə-jē How to pronounce toxicology (audio)
plural toxicologies
: the scientific study of the adverse effects of chemical substances on the living organism

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