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There are 3 fifteen-letter words beginning with ACTIN

ACTINOBIOLOGIESACTINOBIOLOGY n. the branch of biology concerned with the effects of radiation on living organisms.
ACTINOCHEMISTRYactinochemistry n. The science of chemistry and actinism.
ACTINOCHEMISTRY n. another name for photochemistry.
ACTINOTHERAPIESACTINOTHERAPY n. the use of ultraviolet and other actinic rays in medical treatment.

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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 18 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 7 words


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