a. Belonging to, or resembling, the aurora (the dawn or the northern lights); rosy. [ 1913 Webster ]
Her cheeks suffused with an auroral blush. Longfellow. [ 1913 Webster ]
a. [ L. ros, roris, dew. ] Of or pertaining to dew; consisting of dew; dewy. [ R. ] M. Green. [ 1913 Webster ]
a. [ L. soror sister: cf. F. sororal. ] Relating to a sister; sisterly. [ R. ] [ 1913 Webster ]