Glossary Overview

Find out about some important fertility terms.

A B C D E F G H I L M O P R S T U V
Oligo-ovulation

Infrequent ovulation.

Oligomenorrhea

Irregular menstrual periods.

Oligospermia

Low number of sperm in the ejaculate of the male.

Oocyte

The egg.

Ovarian Failure

The failure of the ovary to respond to follicle stimulating hormone (FSH) stimulation from the pituitary because of damage to or malformation of the ovary, or a chronic disease such as autoimmune disease. Diagnosed by elevated FSH in the blood.

Ovarian Hyperstimulation Syndrome (OHSS)

Sudden ovarian enlargement accompanied by fluid accumulation in the abdominal cavity. This may occur with or without pain, and with or without accumulation of fluid in the lungs. OHSS is caused when the ovaries become over stimulated by the various hormones that cause follicular development.

Ovaries

The two sexual glands of the female where the eggs are stored. The ovaries also produce the hormones estrogen and progesterone.

Ovulation

The release of the egg (ovum) from the ovarian follicle.

Ovulation Induction (OI)

Medical treatment performed to initiate ovulation.

Ovulatory Dysfunction

A problem with the ovary where the egg is not matured or released properly.

Ovum

The egg.

A B C D E F G H I L M O P R S T U V