Sorority
来自Big Physics
mid 16th century: from medieval Latin sororitas, or from Latin soror ‘sister’ (on the pattern of fraternity ).
wiktionary
From Renaissance Latin Latin sorōritās, from Latin soror(“sister”), from Proto-Indo-European *swésōr. Akin to Spanish sororidad, Portuguese sororidade, French sororité.
etymonline
sorority (n.)
1530s, "a society of women, body of women united for some purpose," from Medieval Latin sororitas "sisterhood, of or pertaining to sisters," from Latin soror "sister" (see sister). Sense of "women's society in a college or university" attested by 1887 (Alpha Delta Pi claims founding in 1851).
