• Webster's Revised Unabridged Dictionary
    • Cilia (Bot) Hairlike processes, commonly marginal and forming a fringe like the eyelash.
    • Cilia (Biol) Small, generally microscopic, vibrating appendages lining certain organs, as the air passages of the higher animals, and in the lower animals often covering also the whole or a part of the exterior. They are also found on some vegetable organisms. In the Infusoria, and many larval forms, they are locomotive organs.
    • Cilia (Zoöl) Small, vibratory, swimming organs, somewhat resembling true cilia, as those of Ctenophora.
    • Cilia (Anat) The eyelashes.
    • ***
Century Dictionary and Cyclopedia
    • n cilia Plural of cilium.
    • ***
Chambers's Twentieth Century Dictionary
    • Cilia sil′i-a hair-like lashes borne by cells
    • ***


Webster's Revised Unabridged Dictionary
L. cilium, eyelid
Chambers's Twentieth Century Dictionary
L. cilium, pl. cilia, eyelids, eyelashes.


In literature:

So Cilia Pioschek from the Warthe district came to the Schliebens.
"The Son of His Mother" by Clara Viebig
The cilia fluttered about its spherical body.
"Where the World is Quiet" by Henry Kuttner
In the centre of the praeoral lobe is a tuft of cilia.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2" by Various
Having no longer any use for the little cilia, which enabled it to swim through the water, it now loses them.
"Nature's Miracles, Volume 1" by Elisha Gray
At each end of the oval there is a groove lined by specially long vibratile cilia.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2" by Various
What are the cilia and what use do they probably serve?
"A Treatise on Physiology and Hygiene" by Joseph Chrisman Hutchison
They have cilia or flagella (projections larger than cilia).
"A Guide for the Study of Animals" by Worrallo Whitney
Symmetrically placed flagella may have a symmetrical reciprocating motion like that of cilia.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 4" by Various
Cecilia was her proper name, but she was invariably called Cilia for short.
"Dry Fish and Wet" by Anthon Bernhard Elias Nilsen
Their inner surface is amoeboid and in certain conditions bears one or more vibratile cilia or protoplasmic lashes.
"Freshwater Sponges, Hydroids & Polyzoa" by Nelson Annandale

In news:

Crucial to their function are tip links , strings of protein that physically connect the cilia or "hairs" found on these cells.
While waiting for graduate school to begin in 1980, Giambattista Cilia's father gave him and two friends a few tons of nero d'avola grapes for winemaking.

In science:

Many microorganisms are able to propel themselves, bacteria, sperm cells, microalgae, etc. A quantitative understanding of the hydrodynamics of flagella and cilia is thus of great interest [2, 3].
The random walk of a low-Reynolds-number swimmer
Atomic force microscopy also allows direct measurement of the force exerted by cilia .
The hydrodynamics of swimming microorganisms
Its surface is covered by thousands of cilia that beat in a coordinated manner , propelling the cell at speeds of ≈ 500 µm/s (Fig. 1h).
The hydrodynamics of swimming microorganisms
Eukaryotic flagella and cilia use distributed actuation.
The hydrodynamics of swimming microorganisms
In this review we restrict our attention to the case of planar beating, although many sperm flagella exhibit helical beat patterns, and nodal cilia have a twirling, rotational beat pattern [141, 142].
The hydrodynamics of swimming microorganisms