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pro-am

[proh-am]
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adjective
  1. including both professionals and amateurs.
noun
  1. any sporting event in which professionals play with amateurs.

Origin of pro-am

1945–50; pro(fessional)-am(ateur)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for pro-am

pro-am

adjective
  1. (of a golf tournament, snooker tournament, etc) involving both professional and amateur players
noun
  1. a sporting tournament involving both professional and amateur players
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

Word Origin and History for pro-am

adj.

"including professional and amateur players," 1949.

Online Etymology Dictionary, © 2010 Douglas Harper