What does protozoan mean?

Definitions for protozoan
ˌproʊ təˈzoʊ ən; -ˈzoʊ əpro·to·zoan

This dictionary definitions page includes all the possible meanings, example usage and translations of the word protozoan.

Princeton's WordNet

  1. protozoan, protozoonadjective

    any of diverse minute acellular or unicellular organisms usually nonphotosynthetic

  2. protozoal, protozoan, protozoicadjective

    of or relating to the Protozoa

Wiktionary

  1. protozoannoun

    Any of the diverse group of eukaryotes, of the phylum Protozoa, that are primarily unicellular, existing singly or aggregating into colonies, are usually nonphotosynthetic, and are often classified further into phyla according to their capacity for and means of motility, as by pseudopods, flagella, or cilia.

  2. protozoanadjective

    Of, pertaining to, or characteristic of a protozoan.

Wikipedia

  1. protozoan

    Protozoa (singular: protozoan or protozoon; alternative plural: protozoans) are a group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic tissues and debris. Historically, protozoans were regarded as "one-celled animals", because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae.When first introduced by Georg Goldfuss (originally spelled Goldfuß) in 1818, the taxon Protozoa was erected as a class within the Animalia, with the word 'protozoa' meaning "first animals". In later classification schemes it was elevated to a variety of higher ranks, including phylum, subkingdom and kingdom, and sometimes included within Protoctista or Protista. The approach of classifying Protozoa within the context of Animalia was widespread in the 19th and early 20th century, but not universal. By the 1970s, it became usual to require that all taxa be monophyletic (derived from a common ancestor that would also be regarded as protozoan), and holophyletic (containing all of the known descendants of that common ancestor). The taxon 'Protozoa' fails to meet these standards, and the practices of grouping protozoa with animals, and treating them as closely related, are no longer justifiable. The term continues to be used in a loose way to describe single-celled protists (that is, eukaryotes that are not animals, plants, or fungi) that feed by heterotrophy. Some examples of protozoa are Amoeba, Paramecium, Euglena and Trypanosoma. Despite awareness that the traditional taxonomic concept of "Protozoa" did not meet contemporary taxonomic standards, some authors have continued to use the name, while applying it to differing scopes of organisms. In a series of classifications by Thomas Cavalier-Smith and collaborators since 1981, the taxon Protozoa was applied to a restricted circumscription of organisms, and ranked as a kingdom. A scheme presented by Ruggiero et al. in 2015, places eight not closely related phyla within Kingdom Protozoa: Euglenozoa, Amoebozoa, Metamonada, Choanozoa sensu Cavalier-Smith, Loukozoa, Percolozoa, Microsporidia and Sulcozoa. Notably, this approach excludes several major groups of organisms traditionally placed among the protozoa, including the ciliates, dinoflagellates, foraminifera, and the parasitic apicomplexans, which were located in other groups such as Alveolata and Stramenopiles, under the polyphyletic Chromista. The Protozoa in this scheme do not form a monophyletic and holophyletic group (clade), but a paraphyletic group or evolutionary grade, because it excludes some descendants of Protozoa, as used in this sense.

ChatGPT

  1. protozoan

    A protozoan is a single-celled microscopic organism belonging to the kingdom Protista. These organisms are often complex, with the ability to move, hunt for food, and reproduce. Examples include parasites such as amoebas and malaria-causing plasmodium. They can reside in various environments including soil, water, and inside other organisms.

Webster Dictionary

  1. Protozoanadjective

    of or pertaining to the Protozoa

  2. Protozoannoun

    one of the Protozoa

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Numerology

  1. Chaldean Numerology

    The numerical value of protozoan in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of protozoan in Pythagorean Numerology is: 5

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"protozoan." Definitions.net. STANDS4 LLC, 2024. Web. 12 Jun 2024. <https://www.definitions.net/definition/protozoan>.

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