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antenna

noun [C] (ORGAN)
 
 
/ænˈten.ə/ (plural antennae /-iː/ )

Definition

either of a pair of long, thin organs that are found on the heads of insects and crustaceans (= animals with hard outer shells) and are used to feel withThe development and parts of insects
(Definition of antenna noun (ORGAN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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