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(kor′trŏ-sin) SEE: Cosyntropin.

Cortrosyn stimulation test

ACTH stimulation test.

Corylus avellana

(kor′ĭ-lŭs a″vĕ-lan′ă) [L. hazel(tree) of Abella (a town near Nola, in Campania)] SEE: hazelnut.


(kor″ĭ-nē-bak-tir′ē-ŭm) [L. corynebacterium fr Gr. korynē, a club, + bacterium] A genus of gram-positive, aerobic, nonmotile bacilli of the family Corynebacteriaceae. Some are part of normal skin flora; others are pathogens for domestic animals, birds, and reptiles.

C. diphtheriae The causative agent of diphtheria in humans. SEE: diphtheria.

C. minutissimum The causative species of erythrasma.

C. parvum An organism used as part of a nonspecific immunotherapy regimen (investigational) in the treatment of lung cancer.

C. vaginale A former name for Gardnerella vaginalis.


(kŏ-rī′ză) [Gr. koryza, catarrh] An acute inflammation of the nasal mucosa accompanied by profuse nasal discharge. SEE: cold.


(kō-sĕn′sĭ-tīz) [L. con, with, + sensitivus, sensitive] To sensitize to more than one antigen.

cosleeping, co-sleeping

(kō″slēp′ĭng) [con- + sleeping] The sharing of a bed by several members of the same family or clan.


(koz″mĕ-soot′ĭ-kăl) [cosme(tic) + (pharma)ceutical] A topically applied cream, lotion, moisturizer, or ointment promoted for purported health benefits.

image The FDA has ruled that before an agent can be marketed as having pharmaceutical properties, it must pass stringent testing. The FDA recognizes cosmetics as a category of consumer products applied to the body to enhance appearance, and it recognizes pharmaceuticals as a category of products with proven effect on health, but the FDA does not recognize any agent as a cosmeceutical.


(kŏs-mē′sĭs) [G. kosmesus, an arranging] 1. In surgery, the consideration of the effect the procedure will have on the appearance of the patient. 2. In rehabilitation, the characteristic of orthotic and prosthetic devices that determines their acceptability (and thus their successful use) in relation to a person’s body image. For example, persons with hand amputations may sometimes prefer a more cosmetically acceptable but functionally useless glove over a less appealing but highly functional artificial limb with a stainless steel terminal device.


(kŏz-mĕt′ĭk) 1. A preparation such as powder or cream for improving appearance. 2. Serving to preserve or promote appearance.

cost-, costo-

[L. costa, side, rib] Prefixes meaning rib.


(kŏs′tă) pl. costae [L.] Rib.


(kŏs′tăl) Pert. to a rib.


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