[ mahy-kruh-skop-ik ]
/ ˌmaɪ krəˈskɒp ɪk /
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so small as to be invisible or indistinct without the use of the microscope: microscopic organisms.Compare macroscopic.
very small; tiny.
of, relating to, or involving a microscope: microscopic investigation.
very detailed; meticulous: a microscopic view of society.
suggestive of the precise use of the microscope; minute: microscopic exactness.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
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The rainy weather could not ________ my elated spirits on my graduation day.
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Also mi·cro·scop·i·cal .

Origin of microscopic

First recorded in 1670–80; microscope + -ic

OTHER WORDS FROM microscopic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use microscopic in a sentence

British Dictionary definitions for microscopic


less commonly microscopical

/ (ˌmaɪkrəˈskɒpɪk) /

not large enough to be seen with the naked eye but visible under a microscopeCompare macroscopic
very small; minute
of, concerned with, or using a microscope
characterized by or done with great attention to detail

Derived forms of microscopic

microscopically, adverb
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

Medical definitions for microscopic

[ mī′krə-skŏpĭk ]

Too small to be seen by the unaided eye but large enough to be studied under a microscope.
Of, relating to, or concerned with a microscope.
Being or characterized as exceedingly small; minute.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.