Du?Pont or Du Pont (du?p?nt, dyu-, ?du p?nt, ?dyu-) n. Eleuthère Irénée, 1771?1834, U.S. industrialist, born in France. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.