microorganism

Word parts

micro-   organism

Pronunciation

• (UK) IPA ^(key): /ˌmaɪ.krəʊˈɔː.ɡən.ɪ.zəm̩/
• (US) IPA ^(key): /ˌmaɪ.kroʊˈɔːr.ɡən.ɪ.zəm̩/

• Audio (UK)

  (file)

Noun

Singular microorganism

Plural microorganisms

1. (countable) A microorganism is a living thing that requires a microscope to be seen.

Related words

• microbiology
• microbiologist