compound-complex sentence

(kŏm'pound-kŏm'plĕks)
n.
A sentence consisting of at least two coordinate independent clauses and one or more dependent clauses.

A sentence that contains at least two independent clauses and at least one dependent clause: “Queen Elizabeth I was called a redhead (independent clause), but no one knew her hair color for sure (independent clause) because she always wore a wig (dependent clause).” “Because she always wore a wig” is a dependent clause starting with the subordinating conjunction (see subordination) because. (Compare complex sentence, compound sentence, and simple sentence.)