Circumambiency is valid Scrabble Word

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

Definitions for CIRCUMAMBIENCY in dictionary:

Similar words containing AMBIEN without suffix cy and without prefix circum

ambient11 ambience14 ambients12 ambiences15 circumambient23 circumambience26 circumambiences27 circumambiently28
Find what other words can be done using letters: "circumambiency"
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