Radioisotopically is valid word

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

Definitions for RADIOISOTOPICALLY in dictionary:

Similar words containing RADIOISOTOPICAL without suffix ly

radioisotopical20
Find what other words can be done using letters: "radioisotopically"
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