Definition of "modus" []

• 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. (noun)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• ""Est modus in rebus, sunt certi denique fines [952];" that is to say, a _modus_ [953] as to the tithes and certain _fines_ [954]. '"
• "For years, the Vatican has worked to restore what Pope Benedict XVI has called a modus vivendi between modern reason and faith."
• "The basic sentences (2: 1) - (2: 4) combined with a simple categorical sentence as the second premise boil down to what we today know as modus ponens and modus tollens."