An animalcule is an outdated term used historically to describe microscopic organisms such as bacteria and protozoa. Today, we use specific terms like microorganisms, protists, bacteria, and protozoa to describe these entities in biology. ;
An animalcule is an outdated term for tiny microscopic organisms, notably used by Antony van Leeuwenhoek in the 17th century. Today, we use more specific terms like microorganisms, bacteria, and protozoa to describe these entities. The shift in terminology reflects our improved understanding of the microscopic world.
;