microorganism [mahy-kroh- awr-g uh-niz- uh m] EXAMPLES | WORD ORIGIN noun any organism too small to be viewed by the unaided eye, as bacteria, protozoa, and some fungi and algae. Related forms mi·cro·or·gan·ic , [mahy-kroh-awr- gan-ik] /ˌmaɪ kroʊ ɔrˈgæn ɪk/ mi·cro·or·gan·is·mal, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for microorganisms Contemporary Examples of microorganisms
As an adult, Jonah is drawn to study extremophiles,
microorganisms that flourish in intense climates.
“I was fascinated by the role of
microorganisms in allowing life on Earth to exist,” she says. Historical Examples of microorganisms
All such very small plants and animals are known as
The virulence is not great enough to kill a sufficiently high percentage of rats that eat food containing the
The diseases resulting from the
microorganisms are not contagious and do not spread by contact of diseased with healthy animals.
However, very few experiments have been performed to determine the importance, if any, of these
microorganisms to the host.
The passage of
microorganisms through the digestive tract of Blaberus craniifer mounted under controlled conditions. British Dictionary definitions for microorganisms noun any organism, such as a bacterium, protozoan, or virus, of microscopic size
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
microorganisms in Medicine microorganism [mī′krō-ôr ′gə-nĭz′əm] n. An organism of microscopic or submicroscopic size, especially a bacterium or protozoan.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
microorganisms in Science An organism that can be seen only with the aid of a microscope and that typically consists of only a single cell. Microorganisms include bacteria, protozoans, and certain algae and fungi. See Note at germ.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
microorganisms in Culture
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.