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n. pl. sub·as·sem·blies
An assembled unit forming a component to be incorporated into a larger assembly.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n, pl -blies
(Mechanical Engineering) a number of machine components integrated into a unit forming part of a larger assembly
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
sub•as•sem•bly(ˌsʌb əˈsɛm bli)
n., pl. -blies.
a structural assembly, as of electronic parts, forming part of a larger assembly.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
In logistics, a portion of an assembly, consisting of two or more parts, that can be provisioned and replaced as an entity. See also assembly; component.
Dictionary of Military and Associated Terms. US Department of Defense 2005.