Definisjon av steroid på Engelsk

WordNet

Noun
steroid - any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects
		organic compound any compound of carbon and another element or a radical
		ketosteroid a steroid containing a ketone group
		steroid alcohol, sterol any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances
		bile acid any of the steroid acids generated in the liver and stored with bile
steroid - any hormone affecting the development and growth of sex organs
		steroid hormone, sex hormone
		hormone, internal secretion, endocrine the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
		progestin, progestogen any of a group of steroid hormones that have the effect of progesterone
		androgen, androgenic hormone male sex hormone that is produced in the testes and responsible for typical male sexual characteristics
		estrogen, oestrogen a general term for female steroid sex hormones that are secreted by the ovary and responsible for typical female sexual characteristics
		adrenal cortical steroid, corticoid, corticosteroid a steroid hormone produced by the adrenal cortex or synthesized; administered as drugs they reduce swelling and decrease the body's immune response; "adrenal cortical steroids are used to treat many different conditions"

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Substantiv
steroid - A class of organic compounds having a structure of 17 carbon atoms arranged in four rings; they are lipids, and occur naturally as sterols, bile acids, adrenal and sex hormones, and some vitamins; many drugs are synthetic steroids.
steroid - Any anabolic hormone used to promote muscle growth.
steroid - Any chemical compound used to enhance athletic performance.

A steroid is a type of organic compound that contains a specific arrangement of four rings that are joined to each other. Examples of steroids include cholesterol, the sex hormones estradiol and testosterone, and the anti-inflammatory drug dexamethasone. The sterane core of steroids is composed of seventeen carbon atoms bonded together to form four fused rings: three cyclohexane rings (designated as rings A, B, and C in the figure to the right) and one cyclopentane ring (the D ring).

steroid
A compound composed of a series of four carbon rings joined together to form a structural unit called cyclopentanoperhydrophenanthrene.