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List of 13-letter words beginning with

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There are 10 thirteen-letter words beginning with ACTI

ACTINOBACILLIactinobacilli n. Plural of actinobacillus.
ACTINOBACILLUS n. a bacillus of the genus of bacteria Actinobacillus.
ACTINOBIOLOGYactinobiology n. The study of the effects of radiation upon living organisms.
ACTINOBIOLOGY n. the branch of biology concerned with the effects of radiation on living organisms.
ACTINOMETRIESactinometries n. Plural of actinometry.
ACTINOMETRY n. the measurement of heating power of the sun's rays.
ACTINOMORPHICactinomorphic adj. (Botany, of a flower) Having its petals arranged in a radially symmetric fashion.
ACTINOMORPHIC adj. radially symmetric, also ACTINOMORPHOUS.
ACTINOMYCETESactinomycetes n. Plural of actinomycete.
ACTINOMYCETE n. a filamentous microorganism like both bacteria and fungi, also ACTINOMYCES.
ACTINOMYCOSESactinomycoses n. Plural of actinomycosis.
ACTINOMYCOSIS n. a parasitic disease in men and cattle resulting in inflammation of the jaw.
ACTINOMYCOSISactinomycosis n. (Pathology) An infectious bacterial disease of cattle and swine, sometimes transmitted to man, characterized…
ACTINOMYCOSIS n. a parasitic disease in men and cattle resulting in inflammation of the jaw.
ACTINOMYCOTICactinomycotic adj. Of or pertaining to actinomycosis.
ACTINOMYCOTIC adj. relating to actinomycosis, a parasitic disease in men and cattle resulting in inflammation of the jaw.
ACTINOTHERAPYactinotherapy n. (Medicine) The treatment of disease, especially skin disease, by exposure to ultraviolet light; radiotherapy.
ACTINOTHERAPY n. the use of ultraviolet and other actinic rays in medical treatment.
ACTINOURANIUMactinouranium n. Alternative spelling of actino-uranium.
actino-uranium n. Uranium-235.
ACTINOURANIUM n. the isotope of uranium that has a mass number of 235.

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: 59 words
  • Scrabble in French: 12 words
  • Scrabble in Spanish: 4 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 29 words


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