- a pathogen, especially one used in or produced by biological research.
- the health risk posed by the possible release of such a pathogen into the environment.
Origin of biohazard
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- material of biological origin that is hazardous to humans
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
Word Origin and History for biohazardous
Online Etymology Dictionary, © 2010 Douglas Harper
- A biological agent, such as a virus or a condition that constitutes a threat to humans, especially in biological research or experimentation.
- The potential danger or harm from exposure to such an agent or condition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A biological agent, such as an infectious microorganism, that constitutes a threat to humans or to the environment, especially one produced in biological research or experimentation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.