NCIt definition : A medical contraceptive device of soft flexible material, usually of thin rubber,
that is designed to cover the cervix uteri prior to sexual intercourse to prevent
the entry of spermatozoa. To enhance efficacy, a spermicidal agent is often placed
within the device. Antimicrobial agent(s) can also be used to prevent sexually transmitted
diseases. Efficacy of vaginal diaphragm against infections is very limited.;
Alternative definition : NICHD: A contraceptive device made of soft flexible material, usually of thin rubber,
that is designed to cover the cervix uteri prior to sexual intercourse to prevent
the entry of spermatozoa.;