[in-fyoo-sawr-ee-uh l, -sohr-]


pertaining to, containing, or consisting of infusorians: infusorial earth.

Origin of infusorial

First recorded in 1840–50; Infusori(a) + -al1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for infusorial

Historical Examples of infusorial

  • Then infusorial earth was added, to make the compound porous in texture.

  • The Monads are other infusorial animalcules which make an early appearance in vegetable infusions.

    The Ocean World:

    Louis Figuier

  • But many naturalists insist that the colouring matter proceeds from an infusorial animalcule, the green-coloured Vibrion.

    The Ocean World:

    Louis Figuier

  • From May to August this process was continued without any development of infusorial life.

  • Three days' exposure to the dusty air suffices to render them muddy, fetid, and swarming with infusorial life.