NUCLEUSES is a playable word

nucleus Scrabble® Dictionary

noun
pl. nucleuses or nuclei
an essential part of a cell
92 Playable Words can be made from "NUCLEUSES"
   2-Letter Words (7 found)
   3-Letter Words (23 found)
   6-Letter Words (10 found)
   7-Letter Words (1 found)
   9-Letter Words (1 found)