Odontoceti odon·to·ceti uncommon noun 1. toothed whales: dolphins; porpoises; sperm whales; beaked whales Synonymssuborder Odontoceti Related words Broader terms animal order Parts Cetacea Part of toothed whalePhyseteridaeZiphiidaeDelphinidaePlatanistidae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.