'Compulsatory' definitions:

Definition of 'Compulsatory'

From: GCIDE

Compulsatory \Com*pul"sa*to*ry\, a. Operating with force; compelling; forcing; constraining; resulting from, or enforced by, compulsion. [R.] [1913 Webster]
To recover of us, by strong hand And terms compulsatory, those foresaid lands. --Shak. [1913 Webster]