LATIN DICTIONARYLexicon Latīnum
noun · masculinethird declension

interrēx

interrēx m (genitive interrēgis)
Classical[ɪnˈtɛr.reːks]Ecclesiastical[inˈtɛr.reks]

Meaning

  1. during the Roman Monarchy, the regent holding the royal power between the death of one king and the election of another
  2. during the Roman Republic, one who acted as head of state between two consulates

Declension

declension
formsingularplural
nominativeinterrēxinterrēgēs
genitiveinterrēgisinterrēgum
dativeinterrēgīinterrēgibus
accusativeinterrēgeminterrēgēs
ablativeinterrēgeinterrēgibus
vocativeinterrēxinterrēgēs

inter-rex, rēgis, m.,
I. one who held the regal office between the death of one king and the election of another; a regent, interrex, Liv. 1, 17; 1, 32.—
II. During the times of the republic, one who held the supreme power from the death or absence of the chief magistrates till the election of new ones: L. Flaccus interrex legem de Sulla tulit, Cic. Agr. 3, 2, 5; id. Leg. 1, 15, 42; id. Dom. 14, 38: prodere, to nominate, appoint, id. Agr. 3, 2, 5: creare, Liv. 5, 31, 8: infestam patribus plebem interreges cum accepissent, id. 7, 21.

Origins

From inter- + rēx, back-formed from interrēgnum.

In the Academy Smith's classical dictionaries

AntiquitiesInterrexInterrex (in Greek historians, μεσοβασιλεύς). The fundamental principle of the Roman constitution was that the people, though sovereign, could only ac…

Quick answers

What does interrēx mean in Latin?
interrēx, a noun, means “during the Roman Monarchy, the regent holding the royal power between the death of one king and the election of another; during the Roman Republic, one who acted as head of state between two consulates”.
What is the genitive of interrēx?
The genitive singular is interrēgis. interrēx is masculine, third declension.
How do you pronounce interrēx?
In classical Latin, [ɪnˈtɛr.reːks]; in ecclesiastical (church) Latin, [inˈtɛr.reks].