exonym

[ ek-soh-nim ]
/ ˈɛk soʊ nɪm /

noun

a name used by foreigners for a place, as Florence for Firenze.
a name used by foreigners to refer to a people or social group that the group itself does not use, as Germans for Deutsche.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for exonym

exonym

/ (ˈɛksəˌnɪm) /

noun

a name given to a place by foreignersLondres is an exonym of London

Word Origin for exonym

C20: from Greek ex- 1 + -onym
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012