Skip to Main Content

cycle control

The establishment of menstrual regularity with hormones.


(sī-klĕk′tō-mē) [Gr. kyklos, circle, + ektome, excision] 1. Excision of part of the ciliary body or muscle. 2. Excision of the ciliary border of the eyelids.

cycle regulation

SYN: cycle control.

cycles per second

ABBR: cps. SEE: hertz.

cyclic, cyclical

(sī′klik, sik′lik; sī′kli-kăl, sik′li-kăl) [L. cyclicus fr. Gr. kyklikos, circular] 1. Periodic. 2. Having a ring-shaped structure. 3. Pert. to or affected by menstruation.

cyclic AMP

Adenosine 3′,5′-cyclic monophosphate.

cyclic AMP synthetase

Adenylate cyclase.

cyclic vomiting syndrome

Abdominal migraine.


[Fm (tetra)cycline] A suffix used in pharmacology to name an antibiotic derived from tetracycline.


(sī′klĭnz) A group of intracellular proteins that regulate the cell cycle, i.e., cell growth and division. Some cyclins, including cyclins D and E, are overexpressed in human breast cancer cells.


(sĭk-lī′tĭs) [″ + itis, inflammation] An inflammation of the ciliary body of the eye.

 SYMPTOMS: The patient exhibits perilimbal injection, keratic precipitates in the corneal endothelium, reduced or hazy vision, and decreased intraocular pressure. Pain in or about the eye with photophobia is present, which is worse at night and on pressure. Its course is rapid and progressively unfavorable. Complications include iritis, choroiditis, scleritis, and glaucoma.

 TREATMENT: Steroid eye drops are used. Cataract surgery is helpful in some cases.

cyclo-, cycl-

[Gr. kyklos, wheel, circle] 1. Prefixes meaning circular or cycle. 2. Prefixes meaning the ciliary body of the eye.


(sī″klō-bĕn′ză-prēn) A tricyclic antidepressant analog and centrally acting skeletal muscle relaxant. It is administered orally to manage acute painful musculoskeletal conditions associated with muscle spasm.


(sī″klō-kō″royd-ī′tĭs) [″ + chorioeides, skinlike, + itis, inflammation] Inflammation of the ciliary body and choroid coat of the eye.


(sī-klō-dĕks′trĭn) A molecule made of linked dextrose subunits that can be used in drug delivery in the body. Cyclodextrins have lipid centers surrounded by water-soluble exteriors. This combination allows fat-soluble medicines to be carried through the bloodstream to lipid-rich organs like the brain.


(sī″klō-dī-ăl′ĭ-sĭs) [″ + dialysis, dissolution] An operation performed in certain types of glaucoma to produce communication between the anterior chamber and suprachoroidal space for the escape ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.