apparatus(redirected from critical apparatuses)
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1. a collection of instruments, machines, tools, parts, or other equipment used for a particular purpose
2. a machine having a specific function
3. Anatomy any group of organs having a specific function
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
(science and technology)
A compound instrument designed to carry out a specific function.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.