American English

Definition of cephalopod noun from the Oxford Advanced American Dictionary



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a type of mollusk with a combined head and body, and large eyes. Cephalopods have arms and/or tentacles (= long thin parts like arms), which may have suckers (= round parts that suck) on them. Octopuses and squids are cephalopods.
See the Oxford Advanced Learner's Dictionary entry: cephalopod