from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or resembling cilia.
  • adj. Of or relating to the ciliary body and associated structures of the eye.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of or pertaining to a cilium
  • adj. Of or pertaining to eyelashes.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to the cilia, or eyelashes. Also applied to special parts of the eye itself
  • adj. Pertaining to or connected with the cilia in animal or vegetable organisms.

from The Century Dictionary and Cyclopedia

  • Pertaining to or resembling cilia; hair-like; filamentous; specifically, belonging to the eyelids: as, the ciliary feathers of birds (that is, feathers situated on the edges of the eyelids).
  • Furnished with cilia; ciliated.
  • Pertaining to cilia; characteristic of cilia; done by cilia: as, ciliary action; ciliary motion.
  • Related, associated, or connected in some way with the eye; situated in or about the eye: applied to various delicate anatomical structures.
  • In the eye of a cephalopod, a thickening of the epithelium on the anterior and posterior surfaces of the connective tissue which invests the ciliary muscle and extends to the crystalline lens. Also called corpus epitheliale.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to the human eyelash
  • adj. relating to the ciliary body and associated structures of the eye
  • adj. of or relating to cilia projecting from the surface of a cell


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin cilium ("an eyelid").


  • For the first time, scientists have linked the growth of new brain cells–induced by a compound known as ciliary neurotrophic growth factor CNTF–with weight loss in mice.

    Newborn Brain Cells Could Regulate Weight | Impact Lab

  • As the choroid approaches the front part of the eyeball, its parts become folded upon themselves into a series of ridges, called ciliary processes.

    A Practical Physiology

  • In addition to differentiated retinal cells, the amphibian eye contains a population of self-renewing retinal stem cells located in the retinal periphery in a region called the ciliary marginal zone or CMZ.

    PLoS Biology: New Articles

  • You have a muscle in your eye called the ciliary muscle, that contracts to make the eye’s lens fatter and able to zoom in to objects closer up.

    Shock of Gray

  • In doing so it had cleared all the gunk from my arteries, tweaking my ciliary muscles so my eyesight is as good as anyone's, and generally made me into the healthiest human being on the planet.

    Neurosurgical Intervention For Beginners

  • We vertebrates have ciliary cells, c-opsin, and a phosphodiesterase pathway.

    PZ Myers - The Deepest Links (on Evolution)

  • In our eyes, we primarily use the ciliary photoreceptors for vision, but we also maintain a set of rhabdomeric photoreceptors that have the job of sensing light to set circadian rhythms.

    PZ Myers - The Deepest Links (on Evolution)

  • Some invertebrates also have both, but they use the rhabdomeric receptors for vision and the ciliary receptors for circadian rhythms.

    PZ Myers - The Deepest Links (on Evolution)

  • Modifications from the full body covered norm include a single ring of cilia, grouped ciliary organelles called cirri, and restriction of cilia to feeding tentacles.


  • Small turbellarians use waves of ciliary action for locomotion to glide over surfaces, whereas larger species use muscular movements of their entire body to creep, swim, twist or somersault along the substrate.



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