Prevention of conception or impregnation.
- emergency hormonal c. SYN: morning after pill. SYN: postcoital c..

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con·tra·cep·tion .kän-trə-'sep-shən n deliberate prevention of conception or impregnation
con·tra·cep·tive -'sep-tiv adj or n

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the prevention of unwanted pregnancy, which can be achieved by various means. Hormonal contraceptives (oestrogen and progestogen or progestogen only) act by preventing ovulation. They are usually taken in regular doses in the form of the Pill (see oral contraceptive), but may also be administered through the skin, by means of an adhesive patch impregnated with the hormones, or by three- or two-monthly injections of a long-acting progestogen. Recently developed methods for continuous administration of the hormones include subcutaneous implants of progestogen and hormonal intrauterine devices (see IUS). Methods that aim to prevent fertilization of the ovum include coitus interruptus, the condom, the diaphragm, and surgical intervention (tubal occlusion and vasectomy: see sterilization). Methods that aim to prevent implantation of a fertilized ovum in the uterus include the intrauterine contraceptive device (see IUCD); these methods can be used after intercourse but before implantation (see postcoital contraception). Couples whose religious beliefs forbid the use of mechanical or hormonal contraceptives may use the rhythm method, in which intercourse is limited to those days in the menstrual cycle when conception is least likely.

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con·tra·cep·tion (kon″trə-sepґshən) the prevention of conception or impregnation.

Medical dictionary. 2011.

Look at other dictionaries:

  • CONTRACEPTION — La maîtrise de la fécondité humaine résulte de la mise en œuvre de procédés variés qui, avec le temps, sont devenus de plus en plus efficaces. Déjà, à l’échelle démographique, la seule pratique du coït interrompu fit baisser sensiblement la… …   Encyclopédie Universelle

  • contraception — n. the intentional prevention of conception or impregnation, especially when accomplished by the use of contraceptive medications or devices; a form of birth control. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • contraception — birth control, coined 1886 from L. contra (see CONTRA (Cf. contra)) + ending from CONCEPTION (Cf. conception) …   Etymology dictionary

  • contraception — ► NOUN ▪ the use of contraceptives …   English terms dictionary

  • contraception — [kän΄trə sep′shən] n. [ CONTRA + (CON)CEPTION] the intentional prevention of fertilization of an ovum, as by special devices, drugs, etc …   English World dictionary

  • Contraception — Contrôle des naissances Sexologie et sexualité Sexualité Sexualité humaine Amour Libido …   Wikipédia en Français

  • Contraception — A diaphragm (a type of physical barrier method) in its case, with a quarter added for scale …   Wikipedia

  • contraception — noun ADJECTIVE ▪ effective, reliable ▪ artificial ▪ emergency ▪ oral VERB + CONTRACEPTION ▪ …   Collocations dictionary

  • contraception — /kon treuh sep sheuhn/, n. the deliberate prevention of conception or impregnation by any of various drugs, techniques, or devices; birth control. [1885 90; CONTRA 1 + (CON)CEPTION] * * * Birth control by prevention of conception or impregnation …   Universalium

  • contraception — n. to practice, use contraception * * * [ˌkɒntrə sepʃ(ə)n] use contraception to practice …   Combinatory dictionary

  • contraception — [[t]kɒ̱ntrəse̱pʃ(ə)n[/t]] N UNCOUNT Contraception refers to methods of preventing pregnancy. Use a reliable method of contraception. Syn: birth control …   English dictionary

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