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aciculum

noun
acic·​u·​lum | \ ə-ˈsi-kyə-ləm\
plural acicula\ ə-​ˈsi-​kyə-​lə \ or aciculums

Definition of aciculum

: a needlelike spine or bristle of an animal or plant : acicula specifically : one of the stiff setae in the base of a parapodium of an annelid

First Known Use of aciculum

1867, in the meaning defined above

History and Etymology for aciculum

New Latin, alteration of Late Latin acicula small pin for a headdress

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