ringing up

Science Dictionary
ring   (rĭng)  Pronunciation Key 
  1. A set of elements subject to the operations of addition and multiplication, in which the set is an abelian group under addition and associative under multiplication and in which the two operations are related by distributive laws.

  2. A group of atoms linked by bonds that may be represented graphically in circular or triangular form. Benzene, for example, contains a ring of six carbon atoms. All cyclic compounds contain one or more rings. See annulus.

  3. See growth ring.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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