An agent that reduces the likelihood of or prevents conception.
An agent capable of preventing the formation of a foetus.
Prevents conception by chemical or physical means.
Means of preventing fertilization mechanically (e.g., by condom, diaphragm, intrauterine device (lUD), sponge, cervical cap) by blocking the passage of sperm in the female reproductive tract; chemically by falling or immobilizing the sperm with spermicidal jellies, foams, creams, or suppositories; or biochemically by creating hormonal conditions in the female that make pregnancy impossible (e.g., oral contraceptive pill).
A device or agent used to prevent conception, the fertilization and implantation of an egg in the uterus. Various contraceptives accomplish this is different ways. Contraceptive choices include barrier methods, such as the condom, diaphragm, cervical cap, and sponge; spermicides, such as jellies and foams; the intrauterine device; hormonal methods, such as birth control pills, implants, and injections; and other methods, including natural family planning (the rhythm method); withdrawal (coitus interruptus); and sterilization.
Any process, device, or method that prevents conception. Categories of contraceptives include steroids; chemical; physical or barrier; combinations of physical or barrier and chemical; “natural”; abstinence; and permanent surgical procedures.
A substance that reduces the chance of or prevents conception.