Pronunciation: (ik-sep'shu-nl), [key]
1. forming an exception or rare instance; unusual; extraordinary: The warm weather was exceptional for January.
2. unusually excellent; superior: an exceptional violinist.
3. Educ.(of a child)
a. being intellectually gifted.
b. being physically or esp. mentally handicapped to an extent that special schooling is required.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.