Pronunciation: (lē'zhun), [key]
1. an injury; hurt; wound.
2. Pathol.any localized, abnormal structural change in the body.
3. Plant Pathol.any localized, defined area of diseased tissue, as a spot, canker, blister, or scab.
to cause a lesion or lesions in.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.