名詞 cetacean:

1. large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals
   同義詞：cetacean mammal, blower

形容詞 cetacean:

1. of or relating to whales and dolphins etc
   同義詞：cetaceous

ce.ta.cean

n.（名詞）
Any of various aquatic, chiefly marine mammals of the order Cetacea, including the whales, dolphins, and porpoises, characterized by a nearly hairless body, anterior limbs modified into broad flippers, vestigial posterior limbs, and a flat, notched tail.
鯨目動物：鯨目動物中的一種水生動物，主要是海生哺乳動物，包括鯨、海豚和鼠海豚， 特征為身體幾乎無毛、前肢變成寬大的鰭、后肢退化及尾扁平而分叉
adj.also （形容詞） 也作
cetaceous
Of, relating to, or belonging to the order Cetacea.
鯨目動物的：屬于、關(guān)于或隸屬于鯨目動物的

來源：
From New Latin Côt3cea [order name]
源自 現(xiàn)代拉丁語 Côt3cea [目名]
from Latin côtus [whale] * see Cetus
源自 拉丁語 côtus [鯨] *參見 Cetus