[ proh-tis-tuh ]
/ proʊˈtɪs tə /

noun (used with a plural verb) Biology.

a taxonomic kingdom comprising the protists.

Origin of Protista

From New Latin, dating back to 1875–80; see origin at protist Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for protista

Medicine definitions for protista


[ prō-tĭstə ]


A former taxonomic kingdom made up of eukaryotic, unicellular organisms. Members of Protista now belong to the kingdom Protoctista, a new classification in most modern taxonomic systems.

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