verb (used with object), in·sti·tu·tion·al·ized, in·sti·tu·tion·al·iz·ing.
Also especially British, in·sti·tu·tion·al·ise.
Origin of institutionalize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(tr; often passive) to subject to the deleterious effects of confinement in an institutiona mental patient who was institutionalized into boredom and apathy
(tr) to place in an institution
to make or become an institution
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
"to put into institutional life" (usually deprecatory), 1905; see institution. Related: Institutionalized. Earlier (1865) it meant "to make into an institution."
Online Etymology Dictionary, © 2010 Douglas Harper
To place a person in the care of an institution, especially one providing care for the disabled or mentally ill.