air cell

air cell

 
noun
1.
Anatomy, Zoology, Botany. a cavity or receptacle containing air.
2.
Electricity. a cell in which the positive electrode is depolarized by the oxygen in the air.
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Origin:
1780–90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Air cell is always a great word to know.
So is epidermis. Does it mean:
the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium
of, pertaining to, or affecting the stomach and intestines
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American Heritage
Medical Dictionary

air cell n.

  1. A terminal dilation of the bronchiole where gas exchange is thought to occur.

  2. Spaces that contain air in the bones of the skull.

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