a clause that can stand alone as a sentence, containing a subject and a predicate with a finite verb, as I was there in the sentence I was there when he arrived.
Words nearby main clause
Compare subordinate clause.
Also called in·de·pend·ent clause.
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British Dictionary definitions for main clause
grammar a clause that can stand alone as a sentenceCompare subordinate clause
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