sororibus
Sororibus is a Latin noun form that serves as the dative plural and the ablative plural of soror, meaning sister. In Latin, the same form marks both cases in the plural, so its function is determined by the surrounding grammar and context.
Grammar and forms: Soror is a 3rd-declension feminine noun. Its full paradigm is: singular — nom soror,
Usage: Sororibus occurs in classical and ecclesiastical Latin to refer to female siblings or to address or
Context and notes: As a common older Latin form, sororibus appears primarily in texts dealing with family
See also: soror (sister), sorority (etymology-related term in English).