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 (ăn′ə-măl′kyo͞ol) also an·i·mal·cu·lum (-kyə-ləm)
n. pl. an·i·mal·cules also an·i·mal·cu·la (-kyə-lə)
1. A microscopic or minute organism, such as an amoeba or paramecium, usually considered to be an animal.
2. Archaic A tiny animal, such as a mosquito.

[New Latin animalculum, diminutive of Latin animal, animal; see animal.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.animalculum - microscopic organism such as an amoeba or parameciumanimalculum - microscopic organism such as an amoeba or paramecium
organism, being - a living thing that has (or can develop) the ability to act or function independently
References in periodicals archive ?
and these would seem to be more important than, say, the correct spelling of huzzah or the plural of animalculum, both of which get discussed.