Geisel definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Geisel, Theodor Seuss (pseud. Dr. Seuss) 1904-91; U.S. writer & illustrator, esp. of children's books
Geisel definition by American Heritage Dictionary
, Theodor Seuss Pen name Dr. Seuss 1904-1991.
American writer and illustrator of children's books. His works, known for their humorous verse and playful illustrations, include The Cat in the Hat (1957) and Green Eggs and Ham (1960).