cilium definition by Wordo

Noun

A

short

microscopic

hairlike

organelle

projecting

from

a

eukaryotic

cell

(

such

as

a

unicellular

organism

or

one

cell

of

a

multicelled

organism

)

which

serve

either

for

propulsion

by

causing

currents

in

the

surrounding

fluid

or

as

sensors

.