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Related to compound-complex sentence: compound sentence, simple sentence, Subordinating conjunctions
Compound-complex sentences are one of the four main sentence structures. They are made up of two independent clauses (also known as main clauses) and one or more dependent clauses (or subordinate clauses). For a sentence to be considered compound-complex, at least one of the independent clauses must be a complex sentence (if it were to stand on its own). That is, it is made up of a dependent clause that is introduced and linked to the independent clause by a subordinating conjunction.
A sentence consisting of at least two coordinate independent clauses and one or more dependent clauses.
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.
a sentence having two or more coordinate independent clauses and one or more dependent clauses, as The lightning flashed (independent clause) and the rain fell (independent clause) as he entered the house (dependent clause).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.