Where does “antidune” come from?

antidune (English) comes from English Düne, from Dutch duin, from Middle Dutch dûne, from Old English dūn, from Proto-Germanic *dūnā, from Proto-Celtic dūnom, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

antidune (English): A bedform found in fluvial environments, opposing...

Definitions

A bedform found in fluvial environments, opposing...

Ancestry of “antidune”, step by step

antidune traces back through two separate lines of ancestry.

via English Düne

Step	Language	Word	Meaning
1	English	Düne	an island close to Heligoland
2	Dutch	duin	A dune
3	Middle Dutch	dûne	—
4	Old English	dūn	hill, down; hill, dune; hill, mountain
5	Proto-Germanic	*dūnā	—
6	Proto-Celtic	dūnom	stronghold, rampart
7	Proto-Indo-European	dʰewh₂-	smoke; mist, haze

via English anti

Step	Language	Word	Meaning
1	English	anti	Opposed to something; That has a torsion angle...
2	English	anti-	Against, hostile to; Contrasting with the norm;...
3	Ancient Greek	ἀντι-	anti-, against; like, reminiscent of
4	Ancient Greek	ᾰ̓ντῐ́	opposite

Every word from Proto-Indo-European dʰewh₂- →