unsymmetrical

Asymmetric.

Lacking symmetry; asymmetrical: specifically, in botany, said of such flowers as lack numerical symmetry—that is, have the parts in the different cycles of unequal number. See symmetrical, 5.

Wanting in symmetry, or due proportion pf parts.

Not symmetrical; being without symmetry, as the parts of a flower when similar parts are of different size and shape, or when the parts of successive circles differ in number. See Symmetry.

Being without symmetry of chemical structure or relation.