Definition of amoeba noun from the Oxford Advanced Learner's Dictionary



(also US English ameba) noun
BrE BrE//əˈmiːbə//
; NAmE NAmE//əˈmiːbə//
(pl. amoebas, amoebae
BrE BrE//əˈmiːbiː//
; NAmE NAmE//əˈmiːbiː//
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a very small living creature that consists of only one cell Word Originmid 19th cent.: modern Latin, from Greek amoibē ‘change, alternation’.
See the Oxford Advanced American Dictionary entry: amoeba