anis(o)-
Unequal, asymmetrical, dissimilar.
[Greek anisos, unequal.]
Terms are the negatives, using an- (see a-1), of words in iso-. Examples are anisotropic (from Greek tropē, turn, turning), having a physical property that is not the same in every direction; anisometropia (Greek metron measure, plus ōps, ōp-, eye), inequality of refractive power of the eyes; anisocytosis (Greek kutos, vessel), abnormal variation in the size of cells, especially of red blood corpuscles; anisogamy (Greek gamos, marriage), sexual reproduction by the fusion of dissimilar gametes; and anisophyllous (Greek phullon, leaf), having leaves of different shapes or sizes on either side of a shoot.
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