subsystem(redirected from building subsystem)
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1. a smaller system within a larger one; it has a purpose of its own but also contributes to the overall purpose of the system to which it belongs.
2. in family systems theory, a triad, dyad, or other group of members who are linked by a special association.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.