adjective
- of, relating to, or belonging to the order Cetacea, which includes whales, dolphins, and porpoises
Usage: technical; zoological
Examples
- The cetaceous mammals are among the largest animals ever to exist on Earth.
- Researchers study cetaceous species to understand their migration patterns.
- Dolphins are cetaceous creatures that live in oceans and some rivers.
- The cetaceous order includes both baleen and toothed whales.
- Marine biologists focus on cetaceous conservation efforts worldwide.