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[suhb-mahy-kruh-skop-ik] /ˌsʌb maɪ krəˈskɒp ɪk/
too small to be seen through a microscope.
Sometimes, submicroscopical.
Origin of submicroscopic
Related forms
submicroscopically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for submicroscopic
Historical Examples
  • In any case, a microscope would have done Brown little good in trying to detect the submicroscopic beings of the Rell.

    The Hitch Hikers Vernon L. McCain
  • These colloid substances have a submicroscopic or micellian structure; they are web-like, porous and absorb water eagerly.

    The Natural History of Clay Alfred B. Searle
  • Very few, if any, higher life forms existed that did not have some sort of submicroscopic parasite afflicting them.

    Star Surgeon Alan Nourse
British Dictionary definitions for submicroscopic


too small to be seen through an optical microscope
Derived Forms
submicroscopically, 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
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submicroscopic in Medicine

submicroscopic sub·mi·cro·scop·ic (sŭb'mī-krə-skŏp'ĭk)
Too small to be visible under the most powerful optical microscope.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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