Peloponnesian Peninsula pe·lo·pon·nesianpeninsula uncommon noun 1. the southern peninsula of Greece; dominated by Sparta until the 4th century BC SynonymsPeloponnesePeloponnesusPeloponnesian Peninsula Related words Broader terms peninsula Parts Greece Part of SpartaOlympia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
