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a·moe·baalso a·me·ba (ə-mē′bə)
n. pl. a·moe·bas or a·moe·bae (-bē) also a·me·bas or a·me·bae
Any of various one-celled free-living or parasitic protozoans having no definite form and moving by means of pseudopods.
[New Latin Amoeba, genus name, from Greek amoibē, change, from ameibein, to change; see mei- in Indo-European roots.]
a·moe′bic (-bĭk) adj.