Science Dictionary
lamina   (lām'ə-nə)  Pronunciation Key 
Plural laminae (lām'ə-nē') or laminas
  1. The expanded area of a leaf or petal; a blade. See more at leaf.

  2. A thin layer of bone, membrane, or other tissue.

  3. The thinnest recognizable layer of sediment, differing from other layers in color, composition, or particle size. Laminae are usually less than 1 cm (0.39 inches) thick.

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