Cham·pol·lion (shäN-pô-lyôN?), Jean François 1790-1832. French Egyptologist. Working from the Rosetta stone, in 1822 he became the first person to decipher Egyptian hieroglyphics.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.Champollion (French ???p?lj??) n (Biography) Jean François (??? fr??swa). 1790?1832, French Egyptologist, who deciphered the hieroglyphics on the Rosetta stoneCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Cham?pol?lion (??? p??ly??) n. Jean François (???) 1790?1832, French Egyptologist. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.