ceil·om·e·ter (sē-lŏm'ĭ-tər)
n.
A photoelectric instrument for ascertaining cloud heights.

[CEIL(ING) + -METER.]

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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