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English definition of “cilium”

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cilium

noun [C] uk   /ˈsɪl.i.əm/ ( plural cilia   //   ) specialized us  
one of the very small parts like hairs on the surface of a cell that move regularly and keep the surrounding liquid moving around it or help an organism with only one cell to move
(Definition of cilium from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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