a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.
Also Mc- Mc-, M'-.
Origin of Mac-
< Irish, Scots Gaelic mac son, Old Irish macc; akin to Welsh, Cornish mab
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British Dictionary definitions for mac-
Mc- or M'-
(in surnames of Scottish or Irish Gaelic origin) son ofMacDonald; MacNeice
Word Origin for Mac-
from Goidelic mac son of; compare Welsh mab, Cornish mab
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