[par-uh-mee-shee-uh m, -shuh m, -see-uh m]
- any ciliated freshwater protozoan of the genus Paramecium, having an oval body and a long, deep oral groove.
Origin of paramecium
1745–55; < New Latin < Greek paramḗk(ēs) oblong, oval + New Latin -ium noun suffix; see -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for paramecium
The Paramecium are propagated by spontaneous division, as already described.
Jennings found a number of races of paramecium of different sizes living under natural conditions.A Critique of the Theory of Evolution
Thomas Hunt Morgan
Swimming vigorously in the water, they devote themselves to chasing the Paramecium.
The neurone, however, is a little unicellular animal, like the amoeba or the paramecium.Introduction to the Science of Sociology
Robert E. Park
- any freshwater protozoan of the genus Paramecium, having an oval body covered with cilia and a ventral ciliated groove for feeding: phylum Ciliophora (ciliates)
C18: New Latin, from Greek paramēkēs elongated, from para- 1 + mēkos length
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 paramecium
Online Etymology Dictionary, © 2010 Douglas Harper
- A genus of freshwater ciliate protozoans, characteristically slipper-shaped and covered with cilia, and commonly used for genetic research and other studies.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Any of various freshwater protozoans of the genus Paramecium that are usually oval in shape and that move by means of cilia. Although they consist of a single cell, paramecia are large enough to be visible to the naked eye. Like other ciliates, paramecia contain two nuclei, a macronucleus and a micronucleus. On the cellular surface is a groove that opens into a gullet, into which food particles are absorbed.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.