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English definition of “ganglion”

ganglion

noun [C]     /ˈɡæŋ.ɡli.ən/ (plural ganglia or ganglions) specialized
a swelling , often on the back of the hand Swellings and lumps a mass of nerve cells , especially appearing outside the brain or spine The brain and nervous system
(Definition of ganglion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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