Is “Nudibranch” a Scrabble word?
Yes
NUDIBRANCH
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 Nudibranch
/ˈnjuːdɪˌbɹæŋk/
noun
1.Any sea slug; specifically the animals belonging to the order Nudibranchia.