often a numerical asymmetry on the two sides.

There is nothing in their mode of life which will afford an explanation of the asymmetry which is a developmental phenomenon.

He fully recognized, however, the similarity of Pteropods to Gastropods in their general asymmetry and in the torsion of the visceral mass in Limacinidae.

Cases of asymmetry or irregularity in the arrangement of the intestinal caeca, though sometimes occurring, are not normal.

In warfare, asymmetry is where something very small can do a huge amount of damage.