Definitions of cilium
  1. noun
    a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms
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    type of:
    cell organ, cell organelle, organelle
    a specialized part of a cell; analogous to an organ
  2. noun
    any of the short curved hairs that grow from the edges of the eyelids
    synonyms: eyelash, lash
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    type of:
    a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss
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