(intransitive) Of a quantity, to become smaller. / (transitive) To make (a quantity) smaller.

An amount by which a quantity is decreased.

(transitive) To denounce as harmful. / (transitive) To blame for ills.

An edict or law. / (law) The judicial decision in a litigated cause rendered by a court of equity. / (law) The determination of a cause in a court of admiralty or court of probate.

To command by a decree.

A small quantity removed or lost. One of a series of regular subtractions.

To decrease a value by a basic quantity unit.

A decree issued by a sovereign.

(law) the official decree marking the legal end of a marriage, allowing the two people to remarry; it follows the decree nisi after six weeks (in Britain)

(law) a decree issued on a first petition for divorce; it becomes absolute at some later date unless cause is shown why it should not.