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potometer

[puh-tom-i-ter] /pəˈtɒm ɪ tər/
noun, Meteorology
1.
an instrument for measuring the amount of water that a plant loses through transpiration, consisting of a sealed vessel of water with a cutting inserted in such a way that moisture can escape only through absorption and transpiration.
Origin
1880-1885
1880-85; < Greek potó(n) drink + -meter
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for potometer

potometer

/pəˌtɒmɪtə/
noun
1.
an apparatus that measures the rate of water uptake by a plant or plant part
Word Origin
from Latin pōtāre to drink + -meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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