Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine


Having particles which easily move and change their relative position without a separation of the mass, and which easily yield to pressure; capable of flowing; liquid or gaseous. Origin: L. Fluidus, fr. Fluere to flow: cf. F. Fluide. See Fluent. A fluid stuff; a body whose particles move easily among themselves. Fluid is a generic term, including liquids and gases as species. Water, air, and steam are fluids. By analogy, the term is sometimes applied to electricity and magnetism, as in phrases electric fluid, magnetic fluid, though not strictly appropriate. Fluid dram, or Fluid drachm, a measure of ability equal to one eighth of a fluid ounce. Fluid ounce. In the United States, a measure of ability, in apothecaries' or wine measure, equal to one sixteenth of a pint or 29.57 cubic centimeters. This, for water, is about 1.04158 ounces avoirdupois, or 455.6 grains. In England, a measure of ability equal to the twentieth part of an imperial pint. For water, this is the weight of the avoirdupois ounce, or 437.5 grains. Fluids of the body. The circulating blood and lymph, the chyle, the gastric, pancreatic, and intestinal juices, the saliva, bile, urine, aqueous humor, and muscle serum are the more significant fluids of the body. The tissues themselves contain a big amount of combined water, so many, that an entire human body dried in vacuo with a very temperate degree of heat gives about 66 for cent of water. Burning fluid, Elastic fluid, Electric fluid, Magnetic fluid, etc. See Burning, Elastic, etc. Source: Websters Vocabulary
torus levatorius   torus manus   torus occipitalis   torus tubarius   torus uretericus   torus uterinus   torved   TOS   (3)
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