[ bloh-doun ]

  1. Automotive. a procedure for measuring the compression within an engine to identify certain mechanical defects, such as worn piston rings.

  2. 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

Words Nearby blowdown Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use blowdown in a sentence

British Dictionary definitions for blowdown (1 of 2)


/ (ˈbləʊˌdaʊn) /

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

British Dictionary definitions for blow down (2 of 2)

blow down

  1. to open a valve in a steam boiler to eject any sediment that has collected

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