Ribonucleoproteins is valid word

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

Definitions for RIBONUCLEOPROTEINS in dictionary:

Similar words containing RIBONUCLEOPROTEIN without suffix s

ribonucleoprotein23
Find what other words can be done using letters: "ribonucleoproteins"
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