Is “Simplex” a Scrabble word?
Yes
SIMPLEX
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 Simplex
noun
1.An analogue in any dimension of the triangle or tetrahedron: the convex hull of n+1 points in n-dimensional space.
2.A simple word, one without affixes.
adjective
1.Single, simple; not complex.
2.Unidirectional