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There are 6 fifteen-letter words ending with TRATION

DECONCENTRATION• deconcentration n. The act of deconcentrating.
• DECONCENTRATION n. the act of deconcentrating.
MISREGISTRATION• misregistration n. Incorrect registration (in any sense).
• MISREGISTRATION n. a wrong registration.
PREREGISTRATION• preregistration n. An early registration, before the normal or traditional time, as with early online check-in at hotels.
• preregistration n. Registration (of a study design) before a clinical trial (or any other type of scientific experiment)…
• preregistration adj. Before registration.
RECONCENTRATION• reconcentration n. A second or subsequent concentration.
• reconcentration n. (Historical) The act or policy of concentrating the rural population in or around towns and villages…
• RECONCENTRATION n. the act of reconcentrating.
REORCHESTRATION• reorchestration n. Second or subsequent orchestration.
• REORCHESTRATION n. the act of reorchestrating.
ULTRAFILTRATION• ultrafiltration n. Filtration through a semipermeable membrane that only allows small molecules through.
• ULTRAFILTRATION n. filtration through a medium (as a semipermeable capillary wall) which allows small molecules (as of water) to pass but holds back larger ones (as of protein).

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 25 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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