periodic sentence

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A sentence in which the main clause or its predicate is withheld until the end; for example,

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun rhetoric A sentence whose main clause appears at its end.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a complex sentence in which the main clause comes last and is preceded by the subordinate clause