n :  a genus of diphasic ameboid protozoans that are characterized by a predominate ameboid stage and a minute flagellate stage with two flagella, that occur esp. in stagnant water and are often coprozoic, and that include one (N. fowleri) causing meningoencephalitis in humans .
 
 
 
Similar sounding terms:  nu·cle·ar 
 
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