1. Large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals
   "Cetaceans are known for their intelligence and complex social structures"; "cetacean mammals are known for their intelligence and complex social structures";
   - cetacean mammal, blower

1. Of or relating to whales and dolphins etc.
   "Cetacean intelligence has long fascinated marine biologists";
   - cetaceous

Derived forms: cetaceans

Type of: aquatic mammal

Part of: Cetacea, order Cetacea, pod

Encyclopedia: Cetacean