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English definition of “amoeba”

amoeba

noun [C] uk (plural amoebae   /-biː/   or amoebas) (US also ameba (plural amebae or amebas))   /əˈmiː.bə/ us  
a very small, simple organism consisting of only one cellBacteria, moulds, germs and viruses
amoebic
adjective uk (US also amebic)   /-bɪk/ us  
(Definition of amoeba from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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