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by-

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  1. a combining form of by1: by-product; bystander; byway.
Also bye-.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for by-

by-

bye-

prefix
  1. nearbystander
  2. secondary or incidentalby-effect; by-election; by-path; by-product

Word Origin

from by
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