Word.ws English Dictionary

micro-organism

micro-organism is the alternative spelling of microorganism.

Meaning of microorganism

Noun

microorganism (plural microorganisms)

  1. An organism that is too small to be seen by the unaided eye; especially, a single-celled organism, such as a bacterium.
    • The cud is then reswallowed by the ruminant and further digested by specialized microorganisms that live in the rumen.
    Synonyms:
    microbe

Forms of micro-organism

pluralmicro-organisms

Questions about micro-organism

What is micro-organism the alternative spelling of?
Micro-organism is the alternative spelling of microorganism.

Words near micro-organism in the dictionary

  1. micro-nations
  2. micro-ohm
  3. micro-ohms
  4. micro-optimization
  5. micro-optimizations
  6. micro-organism
  7. micro-organisms
  8. micro-organizational
  9. micro-penised
  10. micro-poem
  11. micro-poems

Source and license

Adapted from Wiktionary: micro-organism (page history and authors); microorganism (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “micro-organism.” Word.ws, https://word.ws/micro-organism. Based on Wiktionary, CC BY-SA 4.0.