"Polygenism" validity in different word game dictionaries

Dictionary Validity
Scrabble US(US/Canada/Thailand - TWL/NWL) No
Scrabble UK(International - SOWPODS/CSW) Yes
Words with Friends(WWF) Yes

"polygenism" Definition

  1. the doctrine or belief that existing human races have evolved from two or more distinct ancestral types— compare MONOGENISM

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