Where does “radium” come from?

radium (Latin) comes from French radium, from French radioactif, from French actif, from Old French actif, from Latin āctīvus, from Ancient Greek ἐνεργητικός, from Ancient Greek ἐνεργέω, from Ancient Greek ἐνεργός — Creates collective nouns, which refer to groups...

radium (Latin): radium; accusative singular of radius

Definitions

radium; accusative singular of radius

Ancestry of “radium”, step by step

Step	Language	Word	Meaning
1	French	radium	radium
2	French	radioactif	radioactive
3	French	actif	active; asset; top
4	Old French	actif	active
5	Latin	āctīvus	—
6	Ancient Greek	ἐνεργητικός	Able to act on; acting on; Active; In the active...
7	Ancient Greek	ἐνεργέω	to be in action or activity, to operate; to...
8	Ancient Greek	ἐνεργός	at work, active
9	Ancient Greek	ἐν-	in, within; on
10	Ancient Greek	ἐν	in, on, at; among; in, at, or during the time of
11	Ancient Greek	δέρμα	skin, hide
12	Ancient Greek	γλυφή	carving, carved work; hole cut
13	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
14	Proto-Indo-European	-íh₂	—
15	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Words derived from “radium”

Every word from Proto-Indo-European -h₂ →