Where does “emprosthodromous” come from?

emprosthodromous (English) comes from English emprostho-, from Ancient Greek ἔμπροσθεν, from Ancient Greek ἐν, from Ancient Greek δέρμα, from Ancient Greek γλυφή, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

emprosthodromous (English): Of a flower: such that the genetic spiral on its shortest way from the bract to the outermost perianth-segment passes outside the flower, farthest from the axis

Definitions

Of a flower: such that the genetic spiral on its shortest way from the bract to the outermost perianth-segment passes outside the flower, farthest from the axis

Ancestry of “emprosthodromous”, step by step

Step	Language	Word	Meaning
1	English	emprostho-	before, in front
2	Ancient Greek	ἔμπροσθεν	before, in front; before, earlier, of old; before
3	Ancient Greek	ἐν	in, on, at; among; in, at, or during the time of
4	Ancient Greek	δέρμα	skin, hide
5	Ancient Greek	γλυφή	carving, carved work; hole cut
6	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
7	Proto-Indo-European	-íh₂	—
8	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek γλυφή →