- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for blowdown
“The fool Indian ought to make allowance for a blowdown,” he reflected, angrily.
A blazing mass of tops, twisted in a blowdown, fronted them, and they were forced to make a long detour.
- 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