English
heptafluoride
From hepta- + fluoride.
A compound of hepta- + fluoride
Proto-Indo-European *septḿ̥ ‘seven’
Proto-Hellenic *heptə́ ‘seven’
Ancient Greek ἑπτά ‘seven’
English hepta-
Today it means
noun any fluoride containing seven fluorine atoms in each molecule
Language periods are conventional ranges, not dates for this word.
Etymograph / heptafluoride