Siglum is valid Scrabble Word

Is siglum a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is siglum valid Words with Friends?
Words with Friends YES

Definitions for SIGLUM in dictionary:

Words related to SIGLUM

sigla6
Find what other words can be done using letters: "siglum"
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