Sex Glossary: D
Depo-Provera: Hormonal method of birth control taken via injection.
detumescence: After a man ejaculates or if his arousal fades, detumescence occurs, in which the brain sends a signal to allow the blood to leave the erect penis, and it returns to its flaccid state.
diaphragm: Barrier method of birth control using a shallow, dome-shaped cup that blocks the whole rear part of the vagina, including the cervix, from sperm.
dildo: A phallic (penis-shaped) object that you insert into your vagina to simulate the feelings that you would get from a real penis.