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There are 9 twelve-letter words containing IOTH

BIBLIOTHECAE• bibliothecae n. Plural of bibliotheca.
• BIBLIOTHECA n. a collection of books; a list of books.
BIBLIOTHECAL• bibliothecal adj. Belonging or pertaining to a library.
• BIBLIOTHECAL adj. of or like a bibliotheca, a collection of books; a list of books.
BIBLIOTHECAS• bibliothecas n. Plural of bibliotheca.
• BIBLIOTHECA n. a collection of books; a list of books.
HELIOTHERAPY• heliotherapy n. Any medical therapy by exposure to light.
• HELIOTHERAPY n. medical treatment by exposure to the sun's rays.
HOMOIOTHERMS• homoiotherms n. Plural of homoiotherm.
• HOMOIOTHERM n. a warm-blooded animal, also HOMEOTHERM, HOMOEOTHERM.
HOMOIOTHERMY• homoiothermy n. (Biology) Alternative form of homeothermy.
• HOMOIOTHERMY n. the maintenance of a constant body temperature, also HOMEOTHERMISM, HOMEOTHERMY, HOMOTHERMY.
IDIOTHERMOUS• IDIOTHERMOUS adj. warm-blooded.
RADIOTHERAPY• radiotherapy n. The therapeutic use of ionizing radiation, almost exclusively used for the treatment of malignant disease.
• RADIOTHERAPY n. treatment by radiation.
RADIOTHORIUM• radiothorium n. (Physics) The radioactive isotope thorium-228.
• RADIOTHORIUM n. a radioactive isotope of thorium with the mass number 228.

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: 27 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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