Definition of cilium in English:
cilium
nounPlural ciliaˈsɪlɪəmˈsɪliəm
1Biology
A short microscopic hair-like 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.
Example sentencesExamples
- Some single-celled organisms called protists do in fact use cilia on their cell surface to swim through water.
- As the cilia whip around clockwise, they circulate the fluids.
- The cilia create a current by beating in a coordinated manner.
- Our respiratory systems are lined with millions of tiny cilia that clean all kinds of irritants - germs, dust, mucus - out of our bodies.
- Each hair-like cilium is associated with a set of tubules and structural protein molecules that make up a kinetosome.
Synonyms
fibre, thread, strand, tendril
2Anatomy
An eyelash.
Example sentencesExamples
- Normally the eyelashes (or cilia) grow from follicles in the eyelid.
- Ectopic cilia are particularly irritating and likely to cause corneal ulcers.
Origin
Early 18th century (in the sense 'eyelash'): from Latin.
Rhymes
beryllium, psyllium, trillium