un based

Medical Dictionary

base (bās)

  1. The part of an organ nearest its point of attachment.

  2. A fundamental ingredient; a chief constituent of a mixture.

  3. Any of a large class of compounds, including the hydroxides and oxides of metals, having a bitter taste, a slippery solution, the capacity to turn litmus blue, and to react with acids to form salts.

  4. A molecular or ionic substance capable of combining with a proton to form a new substance. Also called Brønsted base.

  5. A nitrogen-containing organic compound that combines in such a manner.

  6. A substance that provides a pair of electrons for a covalent bond with an acid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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