LATIN DICTIONARYLexicon Latīnum
nounthird declension

lēx rēgia

lēx rēgia f (genitive lēgis rēgiae)
Classical[ˈɫeːks ˈreː.ɡi.a]Ecclesiastical[ˈlɛks ˈrɛː.d͡ʒi.a]

Meaning

  1. Ancient Romeplural normallyOne of a group of ancient laws attributed to the Roman kings.
    In primis foedera ac leges—erant autem eae duodecim tabulae et quaedam regiae leges—conquiri, quae comparerent, iusserunt.They first of all decreed that treaties and laws be collected—namely the twelve tables and certain royal laws—as far as they could be discovered.27 BCE – 25 BCE, Titus Livius, Ab urbe condita 6.1.10
  2. Late LatinMedieval LatinThe irrevocable transfer of supreme power from the Roman people to the emperor, the basis of secular monarchy.
    Prout est in principe diffinitur sic: merum imperium est absoluta potestas imperatori concessa per legem regiam.Just as, in the prince, it is defined thus: merum imperium is the absolute power conceded to the emperor through the lex regia.1327 – 1400, Baldus de Ubaldis, Commentaria in Digesta ad 2.1.3

Declension

declension
formsingularplural
nominativelēx rēgialēgēs rēgiae
genitivelēgis rēgiaelēgum rēgiārum
dativelēgī rēgiaelēgibus rēgiīs
accusativelēgem rēgiamlēgēs rēgiās
ablativelēge rēgiālēgibus rēgiīs
vocativelēx rēgialēgēs rēgiae

Origins

Literally, “(the) royal law”. The process by which the term came to refer to the definitive transfer of authority from the Roman people to the emperor is obscure and controversial: although Ulpian (c. 220 CE) uses the term in describing the emergence of the principate, it is unclear whether he intended it specifically or in the generic sense of a royal law; it has also been argued that its appearance in Ulpian is a later Byzantine interpolation. The particular sense was established by the time of the Corpus Juris Civilis of Justinian (529–34).

Quick answers

What does lēx rēgia mean in Latin?
lēx rēgia, a noun, means “One of a group of ancient laws attributed to the Roman kings.; The irrevocable transfer of supreme power from the Roman people to the emperor, the basis of secular monarchy.”.
What is the genitive of lēx rēgia?
The genitive singular is lēgis rēgiae. lēx rēgia is third declension.
How do you pronounce lēx rēgia?
In classical Latin, [ˈɫeːks ˈreː.ɡi.a]; in ecclesiastical (church) Latin, [ˈlɛks ˈrɛː.d͡ʒi.a].