List of 13-letter words beginning with

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There are 10 thirteen-letter words beginning with ACTI

ACTINOBACILLI	• actinobacilli n. Plural of actinobacillus. • ACTINOBACILLUS n. a bacillus of the genus of bacteria Actinobacillus.
ACTINOBIOLOGY	• actinobiology 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.
ACTINOMETRIES	• actinometries n. Plural of actinometry. • ACTINOMETRY n. the measurement of heating power of the sun's rays.
ACTINOMORPHIC	• actinomorphic adj. (Botany, of a flower) Having its petals arranged in a radially symmetric fashion. • ACTINOMORPHIC adj. radially symmetric, also ACTINOMORPHOUS.
ACTINOMYCETES	• actinomycetes n. Plural of actinomycete. • ACTINOMYCETE n. a filamentous microorganism like both bacteria and fungi, also ACTINOMYCES.
ACTINOMYCOSES	• actinomycoses n. Plural of actinomycosis. • ACTINOMYCOSIS n. a parasitic disease in men and cattle resulting in inflammation of the jaw.
ACTINOMYCOSIS	• actinomycosis 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.
ACTINOMYCOTIC	• actinomycotic adj. Of or pertaining to actinomycosis. • ACTINOMYCOTIC adj. relating to actinomycosis, a parasitic disease in men and cattle resulting in inflammation of the jaw.
ACTINOTHERAPY	• actinotherapy 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.
ACTINOURANIUM	• actinouranium 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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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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