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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.

Hairlike processes, commonly marginal and forming a fringe like the eyelash.

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.

Hairlike processes, commonly marginal and forming a fringe like the eyelash.

Populations of thin, motile processes found covering the surface of ciliates (CILIOPHORA) or the free surface of the cells making up ciliated EPITHELIUM. Each cilium arises from a basic granule in the superficial layer of CYTOPLASM. The movement of cilia propels ciliates through the liquid in which they live. The movement of cilia on a ciliated epithelium serves to propel a surface layer of mucus or fluid. (King & Stansfield, A Dictionary of Genetics, 4th ed)

Plural of cilium.

The eyelashes; hair-like cellular process.

The eyelashes; long hairs on the margin of a plant, leaf, &c.; minute filaments on the surfaces of animal membranes, endowed with quick vibratile motion.

The hair of the eyelids; hairs on the margin of any body; thin hair like projections from an animal membrane which have a quick vibratory motion-in the smaller animals and insects only seen by the microscope.

Hairlike vibratile outgrowths of the ectoderm or processes found in many cells; barbicels of a feather; marginal hairlike processes; eyelashes.

The hairs on the eyelids. (F.) Cils. Their use seems to be, to prevent the entrance into the eye of light bodies flying in the atmosphere; and to diminish, in certain cases, the intensity of light. Also, the tarsi. Also, a peculiar sort of moving organs, resembling small hairs, vi'bratory or vi'bratile cil'ia, Cil'ia vibrato'ria, (F.) Cils vibratils, which are visible with the microscope in many animals. These organs are found on parts of the body which are habitually in contact with water, or other more or less fluid matters, and produce motion in these fluids, impelling them along the surface of the parts. Cilia have been found to exist in all vertebrate animals except fishes, having been discovered on the respiratory, uterine, and other membranes of mammalia, birds, and reptiles. The terms "vibratory motion" and "ciliary motion" have been used to express the phenomena exhibited by the moving cilia; and it is probable, that this motion is concerned in the progression of fluids along the membranes. As yet, the motion has only been observed in the direction of the outlets of canals.

Eyelashes.

Minute lash-like processes.

The eyelashes, also the free margins of the eyelids.

Vibratile, hairlike projections from the free surface of certain epithelial cells, especially in the ductus deferens, the oviduct, and parts of the respiratory system.