Trisoctahedral is valid Scrabble Word

Is trisoctahedral a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is trisoctahedral valid Words with Friends?
Words with Friends NO

Definitions for TRISOCTAHEDRAL in dictionary:

Similar words containing SOCTAHEDR without suffix al and without prefix tri

trisoctahedra19 trisoctahedron20 trisoctahedrons21
Find what other words can be done using letters: "trisoctahedral"
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