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 U
  • ulcer

    A localized sore in the skin or mucosal surfaces.

  • ulcerative colitis

    A chronic inflammatory disease of the large intestine characterized by bloody diarrhea.

  • ulna

    The larger of the two bones of the forearm.

  • umbilical cord

    A tough, cord-like structure connecting the fetus to the placenta for nourishment.

  • umbilicus

    The scar at the site of attachment of the umbilical cord. The navel or belly button.

  • ungual

    Having to do with the nails.

  • uremia

    The buildup in the blood of substances normally eliminated in the urine.

  • ureter

    A narrow tube that transfers urine from the kidney to the bladder.

  • urethra

    The tube that allows the bladder to empty outside the body.

  • urethral stricture

    A narrow area of the urethra that blocks the flow of urine.

  • urethritis

    Inflammation or infection of the urethra.

  • urinary bladder

    The organ that serves as a temporary storage place for urine. Also called the bladder.

  • urine

    The fluid composed of water and waste products that’s secreted by the kidneys.

  • urogenital

    Having to do with the urinary system and genitals.

  • urology

    The branch of medicine that deals with the urinary system in women and the urogenital system in men.

  • uterus

    A hollow muscular organ in women where the ovum (egg) is deposited and the embryo and fetus are developed.

  • uvula

    The fleshy mass hanging down from the soft palate above the back of the tongue.