Ἃιδης

From LSJ

ἔκστασίς τίς ἐστιν ἐν τῇ γενέσει τὸ παρὰ φύσιν τοῦ κατὰ φύσιν → what is contrary to nature is any developmental aberration from what is in accord with nature (Aristotle, On the Heavens 286a19)

Source

Russian (Dvoretsky)

Ἃιδης: ου, эп.-ион. Ἀΐδης, ᾱο и εο, дор. Ἀΐδας, ᾱ ὁ = ᾅδης.