Is “Vacua” a Scrabble word?
Yes
VACUA
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 Vacua
/ˈvæ.kju.ə/
noun
1.A region of space that contains no matter.
2.(plural only "vacuums") A vacuum cleaner.
3.The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.
“a vacuum of 26 inches of mercury, or 13 pounds per square inch”
Synonyms: vacancy, void, hoover