A small pet as a fly spider etc
- microscopic system such an amoeba or paramecium
- A small animal, as a fly, spider, etc.
- an animal, invisible, or nearly therefore, to the naked-eye.u000du000a See Infusoria.
"very tiny animal," particularly a microscopic one, 1590s, from belated Latin animalculum, diminutive of Latin pet (see animal (n.)). Associated: Animalcular.
(n.) A little animal, as a fly, spider, etc.