This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Any of various one-celled aquatic or parasitic protozoans of the genus Amoeba or related genera, having no definite form and consisting of a mass of protoplasm containing one or more nuclei surrounded by a flexible outer membrane. It moves by means of pseudopods.

n. A genus of unicellular protozoa that moves by means of temporary projections called pseudopodia.

n. The graph of the real part of the logarithms of a polynomial equation in complex numbers.

n. A rhizopod common in fresh water, capable of undergoing many changes of form at will. Same as ameba. See rhizopoda.

n. naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion

"‡ The term amoeba is sometimes used to refer to something with an indefinite, changeable shape."

amœba   

amoebae    ameba    Rhizopoda   

Bathsheba    Chiba    Curitiba    Sheba    cohiba    gleba    rebbe   

microorganisms    chimaera    sea trout    gastrula    ballplayer    isms    roughnecks    sojer