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pollen count

noun
  1. a count of the amount of pollen in the air, based on the average of the number of pollen grains that collect on slides exposed to the air for a given period of time.
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Origin of pollen count

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pollen count

pollen count

noun
  1. a measure of the pollen present in the air over a 24-hour period, often published to enable sufferers from hay fever to predict the severity of their attacks
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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

pollen count in Medicine

pollen count

n.
  1. The average number of pollen grains, usually of ragweed, in a cubic yard or other standard volume of air over a 24-hour period at a specified time and place.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.