[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 paramecia
In one bottle, containing decaying chara, Paramecia abounded.
This was known as conjugation, and is seen among Paramecia and some other species to-day.Taboo and Genetics
Melvin Moses Knight, Iva Lowther Peters, and Phyllis Mary Blanchard
The viability of paramecia and euglenae in the digestive tract of cockroaches.The Biotic Associations of Cockroaches
Louis M. Roth
He couldn't remember clearly he was so tired—the rock basin had been literally swarming with paramecia and other forms of life.The Blue Ghost Mystery
Harold Leland Goodwin
The Paramecia, of which there are various species, have always been favourite objects with microscopists.
- 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 paramecia
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.