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[bloh-doun] /ˈbloʊˌdaʊn/
Automotive. a procedure for measuring the compression within an engine to identify certain mechanical defects, such as worn piston rings.
a tree or stand of timber that has been blown down by the wind.
Origin of blowdown
1880-85 for earlier sense; noun use of verb phrase blow down Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for blowdown
  • Drift loss is small compared to evaporation and blowdown, and is controlled with baffles and drift eliminators.
  • The ratio of evaporation to blowdown is called the cycles of concentration.
  • In areas where the canopy has been opened through blowdown of trees, there is a well-developed shrub understory.
  • blowdown and elevation were of secondary importance.
  • If however, blowdown water is being drained and flash steam is being vented, savings will result from steam pressure reduction.
British Dictionary definitions for blowdown


an accident in a nuclear reactor in which a cooling pipe bursts causing the loss of essential coolant
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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