| 单词 | cetacean |
| 释义 | cetacean (once / 24573 pages) nadj A cetacean is a member of the family of large aquatic mammals such as whales, dolphins, and porpoises. They have tails rather than hind limbs, and they have flippers instead of forearms. The word cetacean comes from the Latin word cetus, which was used to refer to any large sea creature, and the Greek word ketos, which was a sea monster or whale. The suffix acea means "of the nature of," so cetacean describes a creature belonging to the family of whales or dolphins. As an adjective, the word is used to describe things related to this group. If you like whales and dolphins, you may enjoy cetacean stories like "Moby Dick." WORD FAMILYcetacean: cetaceans USAGE EXAMPLESGonadal material throws light on the cetacean's reproductive health, blubber thickness reflects the animal's general health while gut contents reveal much about a cetacean's diet. BBC(Dec 29, 2016) This humanmade noise takes a toll, says study co-author Julian Tyne of the Murdoch University Cetacean Research Unit in Perth, Australia. Science Magazine(Dec 01, 2016) It may come as a surprise that whales and dolphins, collectively called cetaceans, are most closely related to the hoofed animals called artiodactyls. The Guardian(Nov 29, 2016) 1n large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals Syn|Hypo|Hyper blower, cetacean mammal whale any of the larger cetacean mammals having a streamlined body and breathing through a blowhole on the head baleen whale, whalebone whalewhale with plates of whalebone along the upper jaw for filtering plankton from the water toothed whaleany of several whales having simple conical teeth and feeding on fish etc. Monodon monoceros, narwal, narwhal, narwhalesmall Arctic whale the male having a long spiral ivory tusk spoutera spouting whale aquatic mammal whales and dolphins; manatees and dugongs; walruses; seals 2adj of or relating to whales and dolphins etc Syn cetaceous |
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