ce·ta·cean
adjective/sɪˈteɪʃn/
/sɪˈteɪʃn/
(biology) (also cetaceous
/sɪˈteɪʃəs/
/sɪˈteɪʃəs/
)- connected with the group of creatures that includes whales and dolphins
enlarge image鲸目动物的；鲸类的 Word Originmodern Latin (plural), from Latin cetus, from Greek kētos ‘whale’.