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List of 13-letter words containing

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There are 20 thirteen-letter words containing A, D, E, 2O, T and Y

ACCIDENTOLOGYaccidentology n. The study of accidents, especially of motor vehicle accidents.
ACCIDENTOLOGY n. the study of accidents.
ACOTYLEDONOUSacotyledonous adj. Having no seed lobes, as the dodder; also applied to plants which have no true seeds, as ferns, mosses, etc.
ACOTYLEDONOUS adj. relating to an acotyledon.
ADENOIDECTOMYadenoidectomy n. (Surgery) Surgical removal of the adenoids, or of adenoid growths in the nasopharynx; commonly performed…
ADENOIDECTOMY n. the surgical removal of the adenoids, also ADENECTOMY.
CYTODIAGNOSEScytodiagnoses n. Plural of cytodiagnosis.
CYTODIAGNOSIS n. medical diagnosis following the close examination of the cells of the body tissues or fluids, e.g. the smear test for cervical cancer.
DACTYLOLOGIESDACTYLOLOGY n. the study of sign language.
DEMONSTRATORYdemonstratory adj. Serving to demonstrate something.
DEMONSTRATORY adj. serving to demonstrate.
DEOXYGENATIONdeoxygenation n. The removal of oxygen atoms or molecules from a material.
DEOXYGENATION n. the act of deoxygenating.
DEVOLUTIONARYdevolutionary adj. Of, pertaining to, advocating or permitting devolution.
DEVOLUTIONARY adj. relating to devolution.
DEVOTIONALITYdevotionality n. The practice of a devotionalist.
DEVOTIONALITY n. the state of being devotional.
HYDROGENATIONhydrogenation n. (Chemistry) The chemical reaction of hydrogen with another substance, especially with an unsaturated…
HYDROGENATION n. the act of hydrogenating.
HYDROGENATORShydrogenators n. Plural of hydrogenator.
HYDROGENATOR n. an agent that hydrogenates.
HYDROTHORACEShydrothoraces n. Plural of hydrothorax.
HYDROTHORAX n. water liquid in the pleural cavity.
HYDROTHORAXEShydrothoraxes n. Plural of hydrothorax.
HYDROTHORAX n. water liquid in the pleural cavity.
MASTOIDECTOMYmastoidectomy n. (Surgery) The surgical procedure to remove part or all of the mastoid process.
MASTOIDECTOMY n. an operation to remove mastoid bone.
MYXOEDEMATOUSmyxoedematous adj. Alternative form of myxedematous.
MYXOEDEMATOUS adj. relating to myxoedema, a skin disease, also MYXEDEMATOUS.
OPINIONATEDLYopinionatedly adv. In an opinionated manner.
OPINIONATED adv. unduly adhering to one's own opinion or to preconceived notions.
PERIODONTALLYperiodontally adv. In a periodontal way.
PERIODONTAL adv. investing or surrounding a tooth.
PHYTONADIONESPHYTONADIONE n. phylloquinone, vitamin K1.
POSTSECONDARYpostsecondary adj. (Education, US and Canada) Of or pertaining to education or educational institutions subsequent to secondary…
POSTSECONDARY adj. taking place after secondary education.
SPLAYFOOTEDLYSPLAYFOOTED adv. having splayed feet.

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: 160 words
  • Scrabble in French: 18 words
  • Scrabble in Spanish: 7 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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