Dictionary.com
Thesaurus.com

baronetess

American  
[bar-uh-ni-tis, bar-uh-net-is] / ˈbær ə nɪ tɪs, ˌbær əˈnɛt ɪs /

noun

  1. a woman holding the rank of a baronet in her own right. Btss

  2. the wife or widow of a baronet. Btss


Etymology

Origin of baronetess

First recorded in 1650–60; baronet ( def. ) + -ess ( def. )