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


Filter By Alphabet
All terms
  • ileus

    Lack of movement of digested food and juices through the gastrointestinal tract. May be due to a blockage of the…

  • ilium

    The flared portion of the pelvis. The hip bone.

  • IM


  • immune

    Resistant to a particular disease.

  • immunity

    Resistance of the body to infection.

  • immunization

    The process of making an individual immune by vaccination or inoculation.

  • immunoglobulin

    A serum protein involved in immunity. An antibody.

  • impetigo

    Skin infection characterized by erupting sores. Caused by staphylococcus or streptococcus bacteria.

  • impotence

    Inability of a male to achieve erection and orgasm.

  • in situ

    In its original place. Carcinoma in situ means cancer that hasn’t spread to other locations.

  • incision

    A cut.

  • incisor

    Any of the front four teeth on either the upper or lower jaw.

  • incompetent

    1. Unable to make rational decisions. 2. Not functioning properly.

  • incontinence

    Inability to hold urine or feces.

  • incubate

    To provide the proper conditions for growth.

  • indigestion

    Upper abdominal discomfort usually experienced after a meal due to incomplete digestion.

  • induration

    The process of hardening. An abnormally hard spot.

  • infarct

    An area of dead or dying tissue produced by lack of blood flow to or from that area. For example,…

  • infection

    Causing disease, especially by the presence of foreign microorganisms in the body, including bacteria, viruses or parasites.

  • infectious disease

    A disease that can be spread from one person to another.

  • infertility

    Inability to produce children.