A marine mammal of the order Cetacea, which includes whales, dolphins, and porpoises.
The blue whale is the largest cetacean and can grow up to 100 feet long.
cetaceanadjective
Relating to or characteristic of whales, dolphins, or porpoises.
The cetacean features of the sculpture were evident in its smooth, streamlined form.
cetaceansnoun
A group of marine mammals that includes whales, dolphins, and porpoises, characterized by a streamlined body, a horizontal tail fin, and a blowhole for breathing.
Cetaceans are known for their intelligence and complex social behaviors.