The Ancient Macedonian word ἀδῆ
Word ἀδῆ
ǎ ð ɛ̂ː
IPA ǎðɛ̂ː
Meaning heaven, sky
See also Greek: αιθήρ ‘air, upper layer of the atmosphere, sky, ether’
Proto-Indo-European: *h₂eidh- ‘kindle, ignite’

Comments

Hesychius

Macedonian version (δ ~ θ) of αἰθήρ “air”. However, it is hard to explain the drop of both -ρ and -ι- from the proposed root *αἰδήρ.


Other words that might be of interest
νίβα ‘snow, spring’