LATIN DICTIONARYLexicon Latīnum
suffixthird-declension two-termination suffix

-estris

-estris (neuter -estre)
Classical[ˈɛs.trɪs]Ecclesiastical[ˈɛs.tris]

Meaning

  1. morphemesuffixtwo terminationDerives adjectives from nouns primarily meaning "dwelling, located in".

Origins

Rebracketed from terrestris, which is derived from Proto-Italic *terzos

Quick answers

What does -estris mean in Latin?
-estris, a suffix, means “Derives adjectives from nouns primarily meaning "dwelling, located in".”.
How do you pronounce -estris?
In classical Latin, [ˈɛs.trɪs]; in ecclesiastical (church) Latin, [ˈɛs.tris].