Where does “radiative” come from?

radiative (Italian) comes from Italian radiativo, from Portuguese Ativo, from Portuguese autivo, from Latin āctīvus, from Ancient Greek ἐνεργητικός, from Ancient Greek ἐνεργέω, from Ancient Greek ἐνεργός, from Ancient Greek ἐν- — Creates collective nouns, which refer to groups...

radiative (Italian): feminine plural of radiativo

Definitions

feminine plural of radiativo

Ancestry of “radiative”, step by step

Step	Language	Word	Meaning
1	Italian	radiativo	radiative
2	Portuguese	Ativo	active
3	Portuguese	autivo	—
4	Latin	āctīvus	active
5	Ancient Greek	ἐνεργητικός	Able to act on; acting on; Active; In the active...
6	Ancient Greek	ἐνεργέω	to be in action or activity, to operate; to...
7	Ancient Greek	ἐνεργός	at work, active
8	Ancient Greek	ἐν-	in, within; on
9	Ancient Greek	ἐν	in, on, at; among; in, at, or during the time of
10	Ancient Greek	δέρμα	skin, hide
11	Ancient Greek	γλυφή	carving, carved work; hole cut
12	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
13	Proto-Indo-European	-íh₂	—
14	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 ἐν- →