Most holy or very holy
Ariyannah is a modern American elaboration of the name Ariana, which ultimately derives from the Greek name Ariadne. It carries the meaning of being exceptionally holy or pure. The double 'n' and terminal 'h' are contemporary stylistic additions common in 21st-century naming trends.
Less common today
Ariyannah isn't in the latest US Top 1000. It last peaked at #8,173 in 2012.
US births per 5-year period, 1990βpresent (SSA data).