Definition of cilium in English:

cilium

Pronunciation /ˈsilēəm/ /ˈsɪliəm/

nouncilia

  • 1Biology
    A short microscopic hairlike vibrating structure found in large numbers on the surface of certain cells, either causing currents in the surrounding fluid, or, in some protozoans and other small organisms, providing propulsion.

    fibre, thread, strand, tendril
  • 2Anatomy
    An eyelash.

Origin

Early 18th century (in the sense ‘eyelash’): from Latin.