a preposition forming part of a title of nobility or surname, as French de or German von.
Words nearby nobiliary particle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for nobiliary particle
a preposition, such as French de or German von, occurring as part of a title or surnameMarquis de Sade
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