blowdown

[ bloh-doun ]
/ ˈbloʊˌdaʊn /

noun

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.

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Origin of blowdown

1880–85 for earlier sense; noun use of verb phrase blow down
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for blowdown (1 of 2)

blowdown
/ (ˈbləʊˌdaʊn) /

noun

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

British Dictionary definitions for blowdown (2 of 2)

blow down

verb

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