infusorial

[ in-fyoo-sawr-ee-uhl, -sohr- ]

/ ˌɪn fyʊˈsɔr i əl, -ˈsoʊr- /

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

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The rainy weather could not ________ my elated spirits on my graduation day.

First recorded in 1840–50; Infusori(a) + -al¹

These are ciliated infusorial animalcules inhabiting ponds and water-tanks.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
Beds of white infusorial earth, resembling magnesia in appearance, known as Bergmehl, occur in Lapland and Finland.
The Popular Science Monthly, September, 1900|Various
"Frankoline," a mixture of cuprous and ferric chlorides dissolved in strong hydrochloric acid absorbed in infusorial earth.
Oxy-Acetylene Welding and Cutting|Harold P. Manly
Blood-like waters are sometimes produced by a rapid evolution of infusorial animalcules.
The Romance of Natural History, Second Series|Philip Henry Gosse

The organic world (like the world as a whole) arises out of a primitive chaos, namely, the infusorial slime.
Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1|Various