- cetacean Zoology
- cetacean Zoology [sɪ'teɪʃən]noun a marine mammal of the order Cetacea; a whale, dolphin, or porpoise.adjective relating to the cetaceans.Originfrom mod. L. Cetacea, from L. cetus, from Gk kētos 'whale'.
English new terms dictionary. 2014.