Dictionary > Oedema

Oedema

Definition
noun, plural: oedemas or oedemata
The excessive accumulation of fluid, such as in the intercellular tissue spaces
Supplement
Pathological oedema is the accumulation of abnormally large amounts of fluid in the intercellular tissue spaces. It may be due to a disease or venous (or lymphatic) obstruction. It may be demonstrated clinically as a swelling in the body caused by the fluid accumulating in the subcutaneous tissues. It may also be seen in one or more bodily cavities. Oedema may be designated according to the site affected. For instance, ascites pertain to the accumulation of serous fluid in the peritoneal cavities. Hydrothorax is oedema in the pleural cavity whereas hydropericardium is oedema in the pericardial sac. Anasarca pertains to the generalized oedema within the subcutaneous tissue.
In humans, pitting (i.e. the applying of pressure to a small area of the skin) is used to determine the presence of cutaneous or peripheral oedema. Oedema is established when an indentation on the skin persists after the pitting. Purtschers disease, Chandler syndrome, Rainbow symptom, Terrys syndrome, eczema, Romanas sign, Haradas syndrome, Extravascular lung water, suffocating gas, Arthus phenomenon, and Miltons disease are just a few of the many diseases that manifest oedema as a symptom.
Oedema also occur in plants, such as in cacti, fuchsias, and succulents. In botany, therefore, it pertains to the excessive accumulation of water in plant tissues resulting in swelling.
Word origin: Greek oidēma, from oidein (to swell)
Variant(s):

  • edema (American English)

Related term(s):

  • Menstrual oedema
  • Corneal oedema
  • Nonpitting oedema
  • Oedema glottidis
  • Oedema disease of swine
  • Oedema disease
  • Blue oedema
  • Hereditary angioneurotic oedema
  • Premenstrual oedema
  • Bullous oedema vesicae
  • Pulmonary oedema
  • High altitude pulmonary oedema
  • Salt oedema
  • Cardiac oedema
  • Yangtze oedema
  • Dependent oedema
  • Brawny oedema
  • Solid oedema
  • High altitude cerebral oedema
  • oedematous (or edematous) (adjective)


  • You will also like...

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    Plant Water Regulation
    Plant Water Regulation

    Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

    Water Cycle
    The Water Cycle

    The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

    Adaptation Tutorial
    Adaptation Tutorial

    Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

    Plant biology
    Plant Biology

    Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Related Articles...

    No related articles found

    See all Related Topics