Believer in; advocate of: utilitarian.
[Latin -ārius, -ary + -an.]
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.
suffix forming nouns
indicating a person or thing that advocates, believes, or is associated with something: vegetarian; millenarian; librarian.
[from Latin -ārius -ary + -an]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Ar•i•an(ˈɛər i ən, ˈær-)
1. of or pertaining to Arius or Arianism.n.
2. an adherent of Arianism.
[1525–35; < Late Latin]
a suffix forming personal nouns corresponding to Latin adjectives ending in -ārius or English adjectives or nouns ending in -ary (librarian; proletarian); subsequently productive in English with other Latinate stems, forming nouns denoting a person who supports, advocates, or practices a doctrine, theory, etc., associated with the base word: authoritarian; vegetarian.
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