LATIN DICTIONARYLexicon Latīnum
adjectivethird-declension two-termination adjective

intermēstris

intermēstris (neuter intermēstre)
Classical[ɪn.tɛrˈmeːs.trɪs]Ecclesiastical[in.terˈmɛs.tris]

Meaning

  1. two terminationbetween two months
    A mensibus intermestris dictum, quod putabant inter prioris mensis senescentis extremum diem et novam lunam esse diem, quem diligentius Attici ἕνην (hénēn) καὶ (kaì) νέαν (néan) appellarunt, ab eo quod eo die potest videri extrema et prima luna.116 BCE – 27 BCE, Marcus Terentius Varro, De Lingua Latina 6.10
  2. broadlytwo terminationnew moon

Declension

singular
formmasculinefeminineneuter
nominativeintermēstrisintermēstrisintermēstre
genitiveintermēstrisintermēstrisintermēstris
dativeintermēstrīintermēstrīintermēstrī
accusativeintermēstremintermēstremintermēstre
ablativeintermēstrīintermēstrīintermēstrī
vocativeintermēstrisintermēstrisintermēstre
plural
formmasculinefeminineneuter
nominativeintermēstrēsintermēstrēsintermēstria
genitiveintermēstriumintermēstriumintermēstrium
dativeintermēstribusintermēstribusintermēstribus
accusativeintermēstrīs
intermēstrēs
intermēstrīs
intermēstrēs
intermēstria
ablativeintermēstribusintermēstribusintermēstribus
vocativeintermēstrēsintermēstrēsintermēstria

inter-mestris, e, adj. mensis,
I. between two months: a mensibus intermestris dictus, Varr. L. L. 6, 2, § 10 Müll.: luna, the new moon, Cat. R. R. 37; Plin. 16, 39, 75, § 194.

Origins

By surface analysis, inter + mēnsis + -tris. According to De Vaan, Latin adjectives ending in -mē(n)stris come from a stem *mēns-tri- since *-sr- would evolve into *-br-.

Quick answers

What does intermēstris mean in Latin?
intermēstris, a adjective, means “between two months”.
How do you pronounce intermēstris?
In classical Latin, [ɪn.tɛrˈmeːs.trɪs]; in ecclesiastical (church) Latin, [in.terˈmɛs.tris].