Definition of oumissus in English:

oumissus

Pronunciation /ˈəʊmɪsɪz/

noun

(also oumiesies)
South African
  • An elderly female owner of a home, farm, or business; a female employer of a servant or labourer; an elderly white woman. Frequently as a respectful form of address or (occasionally) as a title prefixed to a surname.

Origin

1940s. From Afrikaans oumiesies elderly woman from ou + miesies, in forms ending in -us with remodelling of the second element after missus.