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shrink fit

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noun

engineering a tight fit of a collar or wheel boss on a shaft obtained by expanding the collar or boss by heating to enable it to be threaded onto the shaft and then allowing it to cool, or by freezing the shaft to reduce its diameter to enable it to be threaded into the collar or boss and then allowing the shaft temperature to rise

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
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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