alternate

Science Dictionary
alternate   (ôl'tər-nĭt)  Pronunciation Key 
  1. Arranged singly at intervals on a stem or twig. Elms, birches, oaks, cherry trees, and hickory trees have alternate leaves. Compare opposite.

  2. Arranged regularly between other parts, as stamens between petals on a flower.


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