WebMD: Better Information. Better Health.
  • Bookmark This Page
  • Site Map
  • Sign up for WebMD Newsletters

Medical Dictionary

sodium (Na) 

Pronunciation (so'de-um)
Font Size
A
A
A
  1. A metallic element, atomic no. 11, atomic wt. 22.989768; an alkali metal oxidizing readily in air or water; its salts are found in natural biologic systems and are extensively used in medicine and industry. The sodium ion is the most plentiful extracellular ion in the body. For organic sodium salts not listed here, see under the name of the organic acid portion.

Syn: natrium

[Mod. L. fr. soda]

WebMD Medical Reference from "Stedman's Medical Dictionary"

The publisher is not responsible (as a matter of product liability, negligence or otherwise) for any injury resulting from any material contained herein. This publication contains information relating to general principles of medical care which should not be construed as specific instructions for individual patients. Manufacturers’ product information and package inserts should be reviewed for current information, including contraindications, dosages and precautions.
webMD Video

click to expand/contract  IBS Trigger Foods

Everyone's IBS is different, but most sufferers have these symptom triggers in common.

Watch Video

click to expand/contract  Hunger vs. Cravings

click to expand/contract  Killer Abs

click to expand/contract  Truth About Naps

click to expand/contract  Better Sex Exercises

Most Popular Stories