Decree

v. order by law, ordain, proclaim

n. edict, law, mandate, rule

A decree is an order made by a head of state or government and having the force of law. The particular term used for this concept may vary from country to country — the executive orders made by the president of the United States, for example, are decrees. In non-legal English usage, however, the term rule by decree refers to any authoritarian decision and in this sense is often derogatory.
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Noun
1. a legally binding command or decision entered on the court record (as if issued by a court or judge); "a friend in New Mexico said that the order caused no trouble out there"
(synonym) edict, fiat, order, rescript
(hypernym) act, enactment
(hyponym) consent decree
(derivation) rule
(classification) law, jurisprudence
Verb
1. issue a decree; "The King only can decree"
(hypernym) declare
(hyponym) ordain
(derivation) edict, fiat, order, rescript
2. decide with authority; "The King decreed that all first-born males should be killed"
(synonym) rule
(hypernym) decide, make up one's mind, determine
(hyponym) overrule, overturn, override, overthrow, reverse
(derivation) edict, fiat, order, rescript

(v. t.)
To ordain by fate.
  

(v. t.)
To determine judicially by authority, or by decree; to constitute by edict; to appoint by decree or law; to determine; to order; to ordain; as, a court decrees a restoration of property.
  

(v. i.)
To make decrees; -- used absolutely.
  

(n.)
An order from one having authority, deciding what is to be done by a subordinate; also, a determination by one having power, deciding what is to be done or to take place; edict, law; authoritative decision.
  

(n.)
An edict or law made by a council for regulating any business within their jurisdiction; as, the decrees of ecclesiastical councils.
  

(n.)
A determination or judgment of an umpire on a case submitted to him.
  

(n.)
A decision, order, or sentence, given in a cause by a court of equity or admiralty.
  

An order of the Court in proceedings commenced by petition