The definition of a sorority is a social club for females, typically at a college or university, where the girls call each other "sisters," and do activities together.
(noun)Alpha Phi is an example of a sorority.
See sorority in Webster's New World College Dictionary
noun pl. sororities
Origin: ML sororitas, sisterhood < L soror, sister
See sorority in American Heritage Dictionary 4
noun pl. so·ror·i·ties
Origin:
Origin: Medieval Latin sorōritās
Origin: , from Latin soror, sister; see swesor- in Indo-European roots
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