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hyetograph

[hahy-et-uh-graf, -grahf, hahy-i-tuh-]
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noun
  1. a map or chart showing the average rainfall for the localities represented.
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Origin of hyetograph

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for hyetograph

hyetograph

noun
  1. a chart showing the distribution of rainfall of a particular area, usually throughout a year
  2. a self-recording rain gauge
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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