protist


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pro·tist

 (prō′tĭst)
n.
Any of numerous eukaryotic organisms that are not fungi, plants, or animals and are chiefly unicellular or colonial. Protists that are multicellular do not have cells differentiated into tissues. The protists include the protozoans, certain algae, oomycetes, and slime molds.

[From New Latin Prōtista, former kingdom name, from Greek prōtista, neuter pl. of prōtistos, the very first, superlative of prōtos, first; see per in Indo-European roots.]

pro·tis′tan (-tĭs′tən) adj. & n.
pro′tis·tol′o·gy (prō′tĭ-stŏl′ə-jē) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

protist

(ˈprəʊtɪst) or

protistan

n
(Biology) (in some classification systems) any organism belonging to the kingdom Protista, originally including bacteria, protozoans, algae, and fungi, regarded as distinct from plants and animals. It was later restricted to protozoans, unicellular algae, and simple fungi. See also protoctist
[C19: from New Latin Protista most primitive organisms, from Greek prōtistos the very first, from prōtos first]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pro•tist

(ˈproʊ tɪst)

n.
any of various complex one-celled organisms, of the kingdom Protista, that have nuclei and organelles and that are either free-living or aggregated into simple colonies: includes the protozoans, slime molds, and eukaryotic algae.
[1885–90; < New Latin Protista (neuter pl.) < Greek prṓtistos (masculine singular) the very first, superlative of prôtos first; see proto-]
pro•tis′tan, adj., n.
pro•tis′tic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

pro·tist

(prō′tĭst)
Any of a large variety of usually one-celled organisms, including the protozoans, most algae, and the slime molds. Protists are eukaryotes (that is, they have cell nuclei) and live in water or in watery tissues of organisms. They are grouped as a separate kingdom in taxonomy. Also called protoctist. See Table at taxonomy.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.protist - free-living or colonial organisms with diverse nutritional and reproductive modes
microorganism, micro-organism - any organism of microscopic size
division Protista, Protista - eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
Protist
原生生物
원생생물
References in periodicals archive ?
Taxonomic confusion blurs the debate on cosmopolitanism versus local endemism of free-living protists. Protist, 156, 263-267.
The large is a majestic tree that towers up to 130 feet (40 m); among the small is a tiny, single-celled protist. The list of science's best discoveries includes a rare great ape and the fossil of a marsupial lion that roamed Australia in the late Oligocene Epoch.
Behavioural modifications imposed to the ciliate protist Euplotes crassus by Caulerpenyne: the major toxic terpenoid of the green seaweed, Caulerpa taxifolia.
Protist morphologies were visualized under a compound microscope (Leica Microsystems CMS GmbH, Germany) (400x magnification) and counted using a hematocytometer.
Naegleria fowleri is a free-living, thermophilic protist belonging to phylum Percolozoa, typically found in warm bodies of fresh water, such as ponds, lakes, rivers, and hot springs.
This disease is caused by a protist parasite of the genus Leishmania and is transmitted by the bite of a female phlebotomine sand fly.
Caption: Synchrotron scans of a fossil from China's Doushantuo formation (top) yield a 3-D image (bottom) showing three nuclei, indicating the fossil is not from an animal or embryo, but a protist.
In the early stage, the development of molecular systematics led to the discovery of cryptic diversity in most protist phyla and completely altered their classification.