ANIMALCULE
animalcule, animalculum
(noun) microscopic organism such as an amoeba or paramecium
Source: WordNet® 3.1
Etymology
Noun
animalcule (plural animalcules)
(obsolete) A small animal. [16th-19th c.]
A microscopic aquatic animal or protozoan. [from 17th c.]
(now, historical) A spermatozoon. [from 17th c.]
Synonyms
• animalculum
Hyponyms
• eye animalcule
• globe animalcule
• rotifer or wheel animalcule
• paramecium or slipper animalcule
• stentor or trumpet animalcule
• peritrich or bell animalcule
• heliozoa or sun animalcule
• amoeba or proteus animalcule
Source: Wiktionary
An`i*mal"cule, n. Etym: [As if fr. a L. animalculum, dim. of animal.]
1. A small animal, as a fly, spider, etc. [Obs.] Ray.
2. (Zoöl.)
Definition: An animal, invisible, or nearly so, to the naked eye. See
Infusoria.
Note: Many of the so-called animalcules have been shown to be plants,
having locomotive powers something like those of animals. Among these
are Volvox, the Desmidiacæ, and the siliceous Diatomaceæ. Spermatic
animalcules. See Spermatozoa.
Source: Webster’s Unabridged Dictionary 1913 Edition