Dictionary of Medical Terms

Gain a better understanding of medical terminology by searching our dictionary of more than 1,300 terms.

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All terms that start with the letter F

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faint

Temporary loss of consciousness because of an insufficient blood supply to the brain.
fallopian tube

The tubal passageway connecting the ovary to the uterus.
familial cholesterolemia

An inherited disorder causing abnormally high levels of cholesterol in the blood.
fascia

Fibrous sheets of tissue connecting or covering the muscles.
fat

A major energy source for animals and humans. Fat contains nine calories per gram.
fatigue

Physical or mental exhaustion. Weariness.
feces

Body waste expelled from the rectum. Also called bowel movement or stool.
femoral

Having to do with the femur.
femur

The thigh bone.
fertility

The ability to have children.
fertilization

The process of joining the male’s sperm and the female’s ovum (egg).
fetal

Having to do with the fetus.
fetus

The unborn baby from the end of the eighth week after fertilization of the egg to birth.
fever

Abnormally high body temperature.
fiber

1. A slender, thread-like structure of organ tissue. 2. In the diet, strands of complex carbohydrates (cellulose) that aren’t…
fibrillation

A rapid, uncoordinated series of contractions of some part of the heart muscle causing irregular heartbeats. Atrial fibrillation is the…
fibrin

A serum protein that’s essential for the clotting process.
fibroid

A noncancerous tumor of the uterus composed of muscle fibers. Also called uterine myoma.
fibromyalgia

A painful condition with multiple sensitive areas, called “tender points,” affecting fibrous tissues, muscles, tendons and ligaments.
fibrositis

Inflammation of fibrous tissues.
fibula

The long, thin, outer bone of the lower leg.