Is “Cycloid” a Scrabble word?
Yes
CYCLOID
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 Cycloid
/ˈsaɪklɔɪd/
noun
1.The locus of a point on the circumference of a circle that rolls without slipping on a fixed straight line.
2.A fish having cycloid scales.
adjective
1.Resembling a circle; cycloidal.
2.(of fish scales) Thin and rounded, with smooth edges.