Is “Chiasma” a Scrabble word?
Yes
CHIASMA
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 Chiasma
/kaɪˈæzmə/
noun
1.A crossing of two nerves, ligaments etc.
2.The contact point between the two chromatids of a chromosome during meiosis.