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an imaginary line on the surface of a globe or sphere, connecting the opposite ends of its axis. adj., adj merid´ional.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
1. A line encircling a globular body at right angles to its equator and touching both poles, or the half of such a circle extending from pole to pole. Synonym(s): meridianus [TA]
2. In acupuncture, the lines connecting different anatomic sites.
[L. meridianus, pertaining to midday, on the south side, southern]
Farlex Partner Medical Dictionary © Farlex 2012
Any of 12 channels that are believed to extend over the length of the body and believed to carry chi (vital energy) through the body; the meridian concept is central to acupuncture and other forms of oriental medicine. Mainstream Western medicine has been frustrated by its inability to verify the presence of meridians; data suggest that the “trigger points” (which, when stimulated, ameliorate pain elsewhere in the body) identified by neurologists may be identical to acupuncture points.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
1. A line encircling a globular body at right angles to its equator and touching both poles, or the half of such a circle extending from pole to pole.
2. acupuncture The lines connecting different anatomic sites.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
meridian(mĕ-rĭd′ē-ăn) [L. meridianus, pert. to noon]
1. An imaginary line encircling a globe at right angles to its equator and passing through the poles, or half of such a line.
2. In complementary medicine, traditional Chinese medicine, and acupuncture, any of several pathways believed to conduct energy between the surface of the body and the internal organs. Blockage along these pathways is believed to disrupt energy flow (chi or qi) and to cause imbalances that are reflected in symptoms or disease. Meridians and the energy flows they are thought to direct have eluded identification by western scientific methods. See: illustration
3. In visual field testing, a line that denotes an equal level of visual registration. meridional, adjective
meridian of eye
A circle passing through anterior and posterior poles of the eyeball.
Medical Dictionary, © 2009 Farlex and Partners
A section of a sphere. For example, longitude or latitude on the globe. Or, on a clock, a section going through 12:00-6:00 or 3:00-9:00, etc.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
Line encircling a globular body at right angles to its equator and touching both poles, or the half of such a circle extending from pole to pole.
Medical Dictionary for the Dental Professions © Farlex 2012