Quick answer
Ariadne is a girl name meaning "most holy".
Pronunciation: Classical Greek /a.ri.ád.nɛː/; English /ˌæɹ.i.ˈæd.ni/.
Meaning and history
Possibly means "most holy", composed of the Greek prefix ἀρι ( ari ) meaning "most" combined with Cretan Greek ἀδνός ( adnos ) meaning "holy". Some scholars believe this theory improbable and suggest a pre-Greek origin. In Greek mythology, Ariadne was the daughter of King Minos. She fell in love with Theseus and helped him to escape the Labyrinth and the Minotaur, but was later abandoned by him. Eventually she married the god Dionysus.
Notes and context
Usage: greek mythology | Ancient Greek: Ἀριάδνη