Definition of Protoctista in English:
Protoctista
plural noun ˌprəʊtɒkˈtɪstəˌprōtäkˈtistə
Biology A kingdom or large grouping that is either synonymous with the Protista or equivalent to the Protista together with their multicellular descendants.
Example sentencesExamples
- He says there are twenty or more kingdoms hidden in the Protoctista gloss.
- This section covers almost exclusively single-celled forms, i.e. the Protista or Protoctista.
Derivatives
noun
Biology In recent years, eukaryotes have been broken down into four kingdoms: animals, plants, fungi, and protists or protoctists.
Example sentencesExamples
- Not only bacteria, but also archaea, small fungi, and anaerobic (without oxygen) protoctists just don't fit the ‘species concept’ as written above.
- It was just in 1980 that the minute protoctists in the ‘picoplankton’ of polar waters were discovered.
- Most nations of the world do not have complete inventories of their flora and fauna, let alone their fungi, protoctists, and prokaryotes (microorganisms).
- Those who study protoctists, nucleated microorganisms and their immediate descendants exclusive of animals, plants and fungi, are disenfranchised.
Origin
Modern Latin (plural), based on Greek prōtos 'first'.