bio·​haz·​ard | \ ˈbī-ō-ˌha-zərd How to pronounce biohazard (audio) \

Definition of biohazard

: a biological agent or condition that is a hazard to humans or the environment also : a hazard posed by such an agent or condition

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Other Words from biohazard

biohazardous \ ˌbī-​ō-​ˈha-​zər-​dəs \ adjective

Examples of biohazard in a Sentence

The gasoline spill created a serious biohazard.
Recent Examples on the Web If the camp scores above a certain threshold, a crew of biohazard cleaners are dispatched to move the people living there, then go through the remaining belongings, sorting it into trash and useable property, which is stored in a police facility. oregonlive, "Portland to resume homeless camp clean-ups after divided City Council votes unanimously," 8 Jan. 2020 The money funds work at two OHSU labs, the OHSU primate center and a top biohazard lab in Canada – all necessary to find out if Sacha’s experimental vaccine can be tested on people. oregonlive, "OHSU doc dreams of life-time immunity with one flu shot," 21 Sep. 2019 The Idaho Press reports that the inmates say a deputy pulled the used razors from a biohazard waste box before handing them out to inmates to use and that all seven of the inmates tested positive for hepatitis C following the incident. USA TODAY, "Disney surprise, foreign feral hogs, porous pavement: News from around our 50 states," 13 Sep. 2019 In its statement, Vector said that no biohazard material was being stored in the room where the explosion took place. Helen Regan, CNN, "Explosion and fire break out at Russian lab known for housing deadly smallpox virus," 17 Sep. 2019 At a recent meeting, one resident held up a biohazard container filled with human blood—one example of the kind of waste carried by eagles into residential neighborhoods. Avery Thompson, Popular Mechanics, "Bald Eagles Are Stealing Trash from a Seattle Landfill and Dropping it in the Suburbs," 4 Apr. 2019 Look at this, $12 million for homeless encampment housing, just to clean it up, $2.8 million to wash down biohazard material, and $3.1 million for pitstop portable toilets. Fox News, "'Angel moms' weigh in on the immigration debate," 24 Aug. 2018 Police then gave him the number of Bio Management Northwest, a biohazard cleaning company, and Gatewood called them. Christine Clarridge, The Seattle Times, "‘So much blood’: Son haunted by questions after Renton police’s ‘shoddy’ investigation of his dad’s death," 4 Dec. 2018 Workers in biohazard suits at the scene where a former Russian spy and his daughter were found sickened by a nerve agent on March 8 in Salisbury, England. Anatoly Kurmanaev, WSJ, "Putin’s Unlikely Ally in His Standoff With the West: His Central Banker," 20 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biohazard.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of biohazard

1965, in the meaning defined above

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Time Traveler for biohazard

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The first known use of biohazard was in 1965

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Last Updated

21 Jan 2020

Cite this Entry

“Biohazard.” The Dictionary, Merriam-Webster Inc., Accessed 25 January 2020.

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More Definitions for biohazard


How to pronounce biohazard (audio)

English Language Learners Definition of biohazard

: a biological or chemical substance or situation that is dangerous to human beings and the environment


bio·​haz·​ard | \ ˈbī-ō-ˌhaz-ərd, -ˈhaz- How to pronounce biohazard (audio) \

Medical Definition of biohazard

: a biological agent or condition (as an infectious organism or insecure laboratory procedures) that constitutes a hazard to humans or the environment also : a hazard posed by such an agent or condition

Other Words from biohazard

biohazardous \ -​ˈhaz-​ərd-​əs How to pronounce biohazardous (audio) \ adjective

More from Merriam-Webster on biohazard

Rhyming Dictionary: Words that rhyme with biohazard

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dull or mediocre

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