Is “Firmament” a Scrabble word?
Yes
FIRMAMENT
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Firmament
/ˈfɜːməm(ə)nt/
noun
1.(usually uncountable) The vault of the heavens, where the clouds, sun, moon, and stars can be seen; the heavens, the sky.
2.The field or sphere of an activity or interest.
“the international fashion firmament”
3.In the geocentric Ptolemaic system, the eighth celestial sphere which carried the fixed stars; (by extension) any celestial sphere.
Synonyms: lift, welkin