Online Etymology Dictionary, © 2010 Douglas Harper
- Reduced tension or pressure, as of the intraocular fluid in the eyeball.
- Relaxation of the arteries.
- A condition in which there is diminution or loss of muscular tonicity, resulting in stretching of the muscles beyond their normal limits.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.