Is “Sextile” a Scrabble word?
Yes
SEXTILE
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 Sextile
/ˈsɛks.taɪl/
noun
1.A quantile of six equal proportions; any of the subsets thus obtained.
2.A segment that is a sixth of the whole.
3.A sextile aspect or position.
adjective
1.Of or denoting the aspect or position of any two celestial bodies separated by 60°.