Is “Quadrivalent” a Scrabble word?
Yes
QUADRIVALENT
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 Quadrivalent
/kwɒdrɪˈveɪlənt/
noun
1.Any quadrivalent chromosome
adjective
1.Having a valence of four
2.(of a vaccine) Protecting against four different (usually flu) viruses.
3.Said of a graph: that all of its vertices have degree four.
Synonyms: tetravalent