Is “Fissure” a Scrabble word?
Yes
FISSURE
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 Fissure
/ˈfɪʃ.ə(ɹ)/
noun
1.A crack or opening, as in a rock.
2.A groove, deep furrow, elongated cleft or tear; a sulcus.
verb
1.To split, forming fissures.