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List of 13-letter words containing

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There are 20 thirteen-letter words containing H, I, 2O and X

HOMOSEXUALISMhomosexualism n. (Dated) Homosexuality, the state of being homosexual.
homosexualism n. (Derogatory) A purported ideology behind (and promoting) homosexuality; gayness viewed as an ideology…
HOMOSEXUALISM n. being homosexual.
HOMOSEXUALISThomosexualist n. (Rare, dated, often derogatory) Alternative form of homosexual.
HOMOSEXUALIST n. a homosexual.
HOMOSEXUALITYhomosexuality n. The state of being sexually attracted primarily or exclusively to persons of the same sex, sometimes…
homosexuality n. Sexual activity with a person of the same sex, sometimes (potentially offensive) restricted to same-sex…
HOMOSEXUALITY n. the state of being homosexual.
HYDROPEROXIDEhydroperoxide n. (Organic chemistry) any mono-substituted derivative of hydrogen peroxide - ROOH.
HYDROPEROXIDE n. a compound containing an O2H group.
HYDROXYLATIONhydroxylation n. (Organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement…
HYDROXYLATION n. the act of hydroxylating.
OXYHEMOGLOBINoxyhemoglobin n. (American spelling) Alternative form of oxyhaemoglobin.
OXYHEMOGLOBIN n. a loose compound of oxygen and haemoglobin, also OXYHAEMOGLOBIN.
PHOTOOXIDISEDPHOTOOXIDISE v. to undergo photooxidation, also PHOTOOXIDIZE.
PHOTOOXIDISESPHOTOOXIDISE v. to undergo photooxidation, also PHOTOOXIDIZE.
PHOTOOXIDIZEDphotooxidized v. Simple past tense and past participle of photooxidize.
PHOTOOXIDIZE v. to undergo photooxidation, also PHOTOOXIDISE.
PHOTOOXIDIZESphotooxidizes v. Third-person singular simple present indicative form of photooxidize.
PHOTOOXIDIZE v. to undergo photooxidation, also PHOTOOXIDISE.
PHOTOTOXICITYphototoxicity n. Any adverse effect due to exposure to light, especially such effects on the skin.
PHOTOTOXICITY n. the state of being phototoxic.
PHYTOTOXICITYphytotoxicity n. (Uncountable) The condition of being phytotoxic.
phytotoxicity n. (Countable) A measure of the extent to which something is phytotoxic.
PHYTOTOXICITY n. the state of being phytotoxic.
TOXICOPHAGOUSTOXICOPHAGOUS adj. eating poison, also TOXIPHAGOUS.
TOXICOPHOBIASTOXICOPHOBIA n. the morbid fear of poisoning, also TOXIPHOBIA.
UNORTHODOXIESunorthodoxies n. Plural of unorthodoxy.
UNORTHODOXY n. the state of being unorthodox.
XANTHOCHROIASXANTHOCHROIA n. yellowness of the skin.
XANTHOCHROIDSxanthochroids n. Plural of xanthochroid.
XANTHOCHROID n. a blond-haired and blue eyed person with fair white skin.
XANTHOCHROISMxanthochroism n. Alternative form of xanthochromism.
XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear.
XANTHOCHROMIAxanthochromia n. (Medicine) The yellowish appearance of cerebrospinal fluid that accompanies certain conditions, especially…
XANTHOCHROMIA n. any yellowish discoloration, esp. of the cerebrospinal fluid.
XIPHOPHYLLOUSxiphophyllous adj. (Botany) Having sword-shaped leaves.
XIPHOPHYLLOUS adj. having sword-shaped leaves.

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: 186 words
  • Scrabble in French: 11 words
  • Scrabble in Spanish: 5 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 12 words


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