or chiefly Brit  in*sti*tu*tion*al*ise  vt, -ized  or chiefly Brit  -ised  -iz*ing  or chiefly Brit  -is*ing  1  :  to place in or commit to an institution offering specialized care (as for mental illness, substance abuse, or epilepsy)  2  :  to accustom (a person) so firmly to the care and supervised routine of an institution as to make incapable of managing a life outside in*sti*tu*tion*al*iza*tion or chiefly Brit  in*sti*tu*tion*al*isa*tion  n 
 
 
 
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