from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. of, relating to, or containing infusoria

from the GNU version of the Collaborative International Dictionary of English

  • adj. Belonging to the Infusoria; composed of, or containing, Infusoria.

from The Century Dictionary and Cyclopedia

  • In zoology:
  • Developed in infusions, as animalcules.
  • Containing or consisting of infusorians: as, infusorial earth.
  • Having the characters of the Infusoria; pertaining in any way to the Infusoria.


Sorry, no etymologies found.


  • (_see_ below) attendant upon the use of a solid purifying material, is absorbed in that highly porous and inert description of silica known as infusorial earth or "kieselguhr."

    Acetylene, the Principles of Its Generation and Use

  • Of course, he expected he would get no infusorial animalcules at all in that infusion; but, to his great dismay and discomfiture, he found he almost always did get them.


  • He found that even the mercury itself was positively full of organic matters; that from being constantly exposed to the air, it had collected an immense number of these infusorial organisms from the air.


  • Among the lower forms of animal life, the infusorial animalculae we have already spoken of throw off certain portions, or break themselves up in various directions, sometimes transversely or sometimes longitudinally; or they may give off buds, which detach themselves and develop into their proper forms.


  • The water at midstream is charged with the higher forms of animal and vegetable infusorial life, but at the shore is so lethal in its qualities that nothing exists in it but the lowest forms of fungi and the simplest of living creatures.

    The Malodorous Metropolis

  • The red earth, like that of the Pampas, in which these remains were embedded, contains, according to Professor Ehrenberg, eight fresh-water and one salt-water infusorial animalcule; therefore, probably, it was an estuary deposit.

    Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle

  • Parts of the lake seen from a short distance appeared of a reddish colour, and this perhaps was owing to some infusorial animalcula.

    Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle

  • ASTEROLEPSIS, the giant fossil-fish from the Old Red Sandstone, the antiquity of which should show that the origin of life was not to be found solely in “infusorial points,” but that highly developed forms were among the earliest created — this single prop was admittedly not strong enough to carry the whole burden of proof.

    Australia Felix

  • Innumerable experiments, as well as phenomenal facts, attest the truth of this genesis of life, while the researches of Professor Bastian and other eminent materialists, made in infusorial and cryptogamic directions, confirm rather than discredit it.

    Life: Its True Genesis

  • And among the most distinguished microscopists, it is a question whether these infusorial forms, those exhibiting the most active oscillations, are really vegetal or animal in origin; in other words, whether they are _Fungus-spores_ or _Torula_-cells, or whether they may not be some intermediate forms.

    Life: Its True Genesis


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