noun
- a microscopic or extremely small animal, especially a protozoan or other organism visible only under a microscope
Usage: archaic or historical; plural: animalcula; used primarily in scientific contexts before modern microscopy terminology
Examples
- Early naturalists observed animalcula swimming in pond water through their primitive microscopes.
- The animalculum was too small to be seen with the naked eye.
- Leeuwenhoek's discoveries of animalcula revolutionized understanding of microscopic life.
- Various animalcula inhabit the human digestive system.
- The scientist identified several species of animalcula in the sample.