Is “Cis” a Scrabble word?
Yes
CIS
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 Cis
/sɪs/
adjective
1.Having two mutations on two genes on the same chromosome of a homologous pair.
2.Of the side of the Golgi apparatus nearer to the endoplasmic reticulum.
3.In (or constituting, forming, or describing) a double bond in which the greater radical on both ends is on the same side of the bond.