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List of 13-letter words ending with

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There are 2 thirteen-letter words ending with OACTIVITY

RADIOACTIVITYradioactivity n. Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from…
radioactivity n. The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.
RADIOACTIVITY n. the spontaneous decay of the nucleus of an element.
RETROACTIVITYretroactivity n. The state or characteristic of being retroactive.
retroactivity n. (Law) The application of a law to events that took place before it was made.
RETROACTIVITY n. the state of being retroactive.

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: 8 words
  • Scrabble in French: no word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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