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toxicology

American  
[tok-si-kol-uh-jee] / ˌtɒk sɪˈkɒl ə dʒi /

noun

  1. the science dealing with the effects, antidotes, detection, etc., of poisons.


toxicology British  
/ ˌtɒksɪˈkɒlədʒɪ /

noun

  1. the branch of science concerned with poisons, their nature, effects, and antidotes

"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

toxicology Scientific  
/ tŏk′sĭ-kŏlə-jē /
  1. The scientific study of poisons, of their effects and detection, and of the treatment of poisoning.


Other Word Forms

Etymology

Origin of toxicology

First recorded in 1790–1800; toxico- + -logy

Explanation

Toxicology is the field that studies poisons, especially how poisons work and how to treat them. If you’re writing a true crime story, you should study toxicology to know what happens when the villain poisons the victim’s tea. Mwah ha ha. Have you ever seen a label that said "toxic"? That means that substance will harm you. Toxicology — which is a branch of pharmacology — has to do with toxic substances (poisons). It comes from the Greek word for “arrow poison.” Not all poisons come at the end of an arrow, though. If a toxicology report is done on a dead person, it will reveal if they had any dangerous substances in them, such as illegal drugs or drain cleaner.

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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.

See Examples For:

Most previous toxicology research involving honeybees has centered on worker bees.

From Science Daily Aug. 22, 2026

Dr. David Schaffer is an emergency physician and chief of the division of medical toxicology at Prisma Health, a South Carolina health system.

From The Wall Street Journal Aug. 11, 2026

On Thursday, a spokesperson for Greek police told the BBC they were awaiting the outcome of the toxicology tests to determine the cause of death and ascertain whether foul play was involved.

From BBC Jul. 31, 2026

Cameron, the center’s hospital and rehabilitation manager, said that they were waiting on blood work and toxicology results.

From Los Angeles Times Jul. 22, 2026

Baird conceded, though, that because of the toxicology issues, this one may be tougher than the one with the driver and the bad brakes.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel

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