"Seriation" validity in different word game dictionaries

Dictionary Validity
Scrabble US(US/Canada/Thailand - TWL/NWL) Yes
Scrabble UK(International - SOWPODS/CSW) Yes
Words with Friends(WWF) Yes

"seriation" Definition

  1. formation, arrangement, succession, or position in a series or orderly sequence
  2. a method of determining a chronology (as for archaeological material) by a detailed study of a particular style or type (as of potsherds) that reveals an increase or decrease in the popularity of the style giving a tentative scale from early to late

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