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There are 8 thirteen-letter words containing OACTI

BIOACTIVITIESbioactivities n. Plural of bioactivity.
BIOACTIVITY n. the state of being bioactive.
ELECTROACTIVEelectroactive adj. (Physics, chemistry) describing any material (especially in a cell) that is electrically active or responsive.
electroactive adj. (Physics, chemistry) describing any polymer that changes shape in the presence of an electric field.
ELECTROACTIVE adj. as in electroactive polymers, polymers whose shape is modified when a voltage is applied to them.
PROTOACTINIUMprotoactinium n. Dated form of protactinium.
PROTOACTINIUM n. a radioactive element that yields actinium on disintegration.
RADIOACTIVATEradioactivate v. To make something radioactive.
RADIOACTIVATE v. to activate by radio.
RADIOACTIVELYradioactively adv. Using a radioactive substance.
radioactively adv. Concerning radioactivity.
RADIOACTIVE adv. of, caused by, or exhibiting radioactivity.
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.
RETROACTIVELYretroactively adv. Done after the fact; applying to events that have previously transpired.
RETROACTIVE adv. taking effect as from a previous date.
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: 36 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 8 words


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