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gerontologist

noun [C]
 
 
/ˌdʒer.ənˈtɒl.ə.dʒɪst/ US  /-tɑː.lə-/ specialized

Definition

a person who studies old ageMedical studies and the people who study themThe elderlyOld or old-fashionedDescribing people who are old
(Definition of gerontologist noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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