Science Dictionary
positive   (pŏz'ĭ-tĭv)  Pronunciation Key 
  1. Greater than zero.

  2. Having an electric charge or voltage greater than zero.

  3. Indicating the presence of a disease, condition, or organism, as a diagnostic test.

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