Maiden or spear
A modern compound name likely blending the Greek 'Cora', meaning maiden, with the French 'Anne', meaning grace. Alternatively, it may be a feminine elaboration of the Gaelic name Corey, which relates to a hollow or a spear.
Less common today
Corianne isn't in the latest US Top 1000. It last peaked at #4,918 in 1993.
US births per 5-year period, 1990βpresent (SSA data).