The following glossary is adapted from the glossary provided by Planned Parenthood at https://www.plannedparenthood.org/learn/glossary.
Backup birth control: Any method — including condoms, diaphragms, sponges, or withdrawal — that is used while waiting for another methods to become effective or when another method fails. Some people also refer to emergency contraception as backup birth control.
Bacterial vaginosis or BV: Inflammation of the vulva and/or vagina — vaginitis — caused by a change in the balance of vaginal bacteria, which may be caused by vaginal intercourse or manual sex play.
Balanitis: An inflammation of the glans and foreskin of the penis that can be caused by infections — including sexually transmitted infections — irritations, drugs, or other factors.
Barrier methods of birth control: Contraceptives that block sperm from entering the uterus. These are the condom, female condom, diaphragm, cap, spermicide, and sponge.
Bartholin’s glands: Two glands that provide lubrication during sexual excitement. They are located in the inner labia on each side of the opening to the vagina.
Basal body temperature method: A fertility awareness-based birth control method for predicting a woman’s fertility by taking her temperature. Can be used for contraception or planning a pregnancy.
Birth canal: The passage from the uterus through the cervix and vagina through which the fetus is pushed out of a woman’s body during childbirth.
Birth control: Behaviors, devices, or medications used to avoid unintended pregnancy. Also Contraceptives.
Bladder: The organ that collects and stores urine produced by the kidney. The bladder is emptied through the urethra.
Blastocyst: The developing pre-embryo shortly before implantation when it is a hollow ball of cells.
Breasts: Two glands on the chests of women. Breasts are secondary sex characteristics in women. Like mammary glands in other mammals, they produce milk during and after pregnancy. Men also have breast tissue.
Bubo: A swollen gland and sore caused by chancroid.
Bulbourethral glands: The glands beneath the prostate gland that are attached to the urethra. They produce an alkaline fluid — pre-ejaculate or pre-cum — that neutralizes the urethra in preparation for ejaculation. Pre-ejaculate also reduces friction in the urethra, making it easier for semen to pass through. Also called “Cowper’s glands.”
BV: See bacterial vaginosis.