• Webster's Revised Unabridged Dictionary
    • n Spongilla spŏn*jĭl"lȧ (Zoöl) A genus of siliceous sponges found in fresh water.
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Century Dictionary and Cyclopedia
    • n spongilla The only genus of fresh-water sponges, belonging to the group Fibrospongiæ. The type-species is S. fluvialis, which grows on the banks of rivers and ponds, on submerged timber and other supports, forming thick greenish incrustations. It represents a highly specialized and somewhat aberrant family, Spongillidæ. See also cuts under ciliate and Porifera.
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Webster's Revised Unabridged Dictionary
NL., dim. of spongia, a sponge


In literature:

Spongilla of Lamarck, in tripoli, 25.
"A Manual of Elementary Geology" by Charles Lyell
That one, the spongilla, is not easily found and is very difficult to maintain in the laboratory.
"A Guide for the Study of Animals" by Worrallo Whitney
Spongillae in which the gemmules are covered with a thick, apparently granular pneumatic coat.
"Freshwater Sponges, Hydroids & Polyzoa" by Nelson Annandale
Ganin appears, however, to maintain a contrary view for Spongilla.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour