Infusoria In`fu*so"ri*a, n. pl. [NL.; -- so called because found in infusions which are left exposed to the air for a time. See {Infuse}.] (Zo["o]l.) One of the classes of Protozoa, including a large number of species, all of minute size. Formerly, the term was applied to any microbe found in infusions of decaying organic material, but the term is now applied more specifically to one of the classes of the phylum Ciliophora, of ciliated protozoans. [1913 Webster +PJC]

Note: (From 1913 dictionary): They are found in all seas, lakes, ponds, and streams, as well as in infusions of organic matter exposed to the air. They are distinguished by having vibrating lashes or cilia, with which they obtain their food and swim about. They are devided into the orders {Flagellata}, {Ciliata}, and {Tentaculifera}. See these words in the Vocabulary. Formely the term Infusoria was applied to all microscopic organisms found in water, including many minute plants, belonging to the diatoms, as well as minute animals belonging to various classes, as the Rotifera, which are worms; and the Rhizopoda, which constitute a distinct class of Protozoa. Fossil Infusoria are mostly the siliceous shells of diatoms; sometimes they are siliceous skeletons of Radiolaria, or the calcareous shells of Foraminifera. [1913 Webster]

The Collaborative International Dictionary of English. 2000.


Look at other dictionaries:

  • Infusoria — is a collective term for minute aquatic creatures like ciliates, euglenoids, protozoa, and unicellular algae that exist in freshwater ponds. In modern formal classifications the term is considered obsolete; and the microorganisms previously… …   Wikipedia

  • Infusoria — Animal An i*mal, a. [Cf. F. animal.] 1. Of or relating to animals; as, animal functions. [1913 Webster] 2. Pertaining to the merely sentient part of a creature, as distinguished from the intellectual, rational, or spiritual part; as, the animal… …   The Collaborative International Dictionary of English

  • Infusoria — Als Infusorien (lateinisch Infusoria) oder Aufgusstierchen bezeichnet man kleine, sich z. B. im Aufguss von pflanzlichem Material entwickelnde Tierchen (z. B. Flagellaten, Wimpertierchen, Amöben). In Aquarien werden sie mitunter zur Anzucht von… …   Deutsch Wikipedia

  • Infusoria — noun in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter • Syn: ↑subclass Infusoria • Hypernyms: ↑class • Member Holonyms: ↑Ciliata, ↑class Ciliata, ↑Ciliophora, ↑ …   Useful english dictionary

  • Infusoria — /in fyoo sawr ee euh, sohr /, 1. protozoans of the phylum Ciliophora (or class Ciliata). 2. (formerly) any of various microscopic organisms found in infusions of decaying organic matter. [1780 90; < NL, neut. pl. of INFUSORIUS. See INFUSE,… …   Universalium

  • infusoria — noun the many minute aquatic creatures, such as protozoa and unicellular algae found in fresh water habitats …   Wiktionary

  • Infusoria — Archaic term for Ciliophora. [Mod. L. pertaining to or found in an infusion, fr. in fundo, pp. in fusus, to pour in] * * * in·fu·so·ria .in fyü zōr ē ə, sōr n pl, often cap organisms that are infusorians not used technically …   Medical dictionary

  • INFUSORIA —    a name given to certain classes of animalculæ engendered in stagnant water infused with decaying organic matter …   The Nuttall Encyclopaedia

  • Infusoria — in·fu·so·ri·a || ‚ɪnfjuː zɔːrɪə n. class of one celled organisms (Zoology) …   English contemporary dictionary

  • infusoria — n. pl. Animalcules, animalcula …   New dictionary of synonyms

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