Animalcule

Animalcule ('little animal', from Latin animal + the diminutive suffix -culum) is an old term for microscopic organisms that included bacteria, protozoans, and very small animals. The word was invented by 17th-century Dutch scientist Antonie van Leeuwenhoek to refer to the microorganisms he observed in rainwater.

Some better-known types of animalcule include:

The concept seems to have been proposed at least as early as about 30 BC, as evidenced by this translation from Marcus Varro's Rerum Rusticarum Libri Tres:

Note also if there be any swampy ground, both for the reasons given above, and because certain minute animals, invisible to the eye, breed there, and, borne by the air, reach the inside of the body by way of the mouth and nose, and cause diseases which are difficult to be rid of.[1]

The term was also used during the 17th century by Henry Oldenburg, the first Secretary of the Royal Society and founding editor of Philosophical Transactions, to translate the Dutch words used by van Leeuwenhoek to describe microorganisms that he discovered.[2]

In Gilbert and Sullivan's The Pirates of Penzance, the word appears in adjectival form in the 'Major-General's Song', in which Major-General Stanley sings, 'I know the scientific names of beings animalculous...' [3]

A 1795 illustration of van Leeuwenhoek's animalcules by an unknown artist.

A 1795 illustration of van Leeuwenhoek's animalcules by an unknown artist

See also

References
  1. Storr-Best, Lloyd (1912). Varro on farming. M. Terenti Varronis Rerum rusticarum libri tres. London: G. Bell and Sons. p. 39.
  2. Anderson, Douglas. "Animalcules". Lens on Leeuwenhoek. Retrieved 9 October 2019.
  3. "I Am the Very Model of a Modern Major-General". Paragraph #2.CS1 maint: others (link)
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