noun.
In Roman and civil law, and early English law, the manner or qualifying terms of a gift or disposition of property.
the GNU version of the Collaborative International Dictionary of English
noun.
The arrangement of, or mode of expressing, the terms of a contract or conveyance.
noun.
A qualification involving the idea of variation or departure from some general rule or form, in the way of either restriction or enlargement, according to the circumstances of the case, as in the will of a donor, an agreement between parties, and the like.
noun.
A fixed compensation or equivalent given instead of payment of tithes in kind, expressed in full by the phrase modus decimandi.
Word Usage
""Est modus in rebus, sunt certi denique fines [952];" that is to say, a _modus_ [953] as to the tithes and certain _fines_ [954]. '"