cetacean(n = noun.animal) blower, cetacean mammal - large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals;
is a kind of aquatic mammal
has parts: fluke, blowhole
is a member of cetacea, order cetacea, pod
has particulars: whale
Derived form adjective cetacean₁

   cetacean(a = adj.pert) cetaceous - of or relating to whales and dolphins etc;
Derived forms noun cetacea₁, noun cetacean₁

   One of the Cetacea. [1913 Webster]

cetacean, n. & adj.
--n. any marine mammal of the order Cetacea with streamlined hairless body and dorsal blowhole for breathing, including whales, dolphins, and porpoises.
--adj. of cetaceans.

Derivative:
cetaceous adj.

Etymology:
mod.L Cetacea f. L cetus f. Gk ketos whale

cetacean mammal