mi·cro·fos·sil

[mahy-kroh-fos-il]
noun
a fossil so small that it can be studied and identified only with a microscope.
Compare macrofossil.


Origin:
1920–25; micro- + fossil

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To microfossils
Collins
World English Dictionary
microfossil (ˈmaɪkrəʊˌfɒsəl) [Click for IPA pronunciation guide]
 
n
a fossil generally less than 0.5 millimetre in size, such as a protozoan, bacterium, or pollen grain

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Microfossils is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a gadget; dingus; thingumbob.
American Heritage
Science Dictionary
microfossil   (mī'krō-fŏs'əl)  Pronunciation Key 
A microscopic fossil, as of a pollen grain or unicellular organism.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences from the web
These phosphatic microfossils are now termed conodont elements to avoid confusion.
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