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There are 14 fifteen-letter words containing H, I, 2O and X

CHEMOTAXONOMIESchemotaxonomies n. Plural of chemotaxonomy.
CHEMOTAXONOMY n. the classification of plants and animals based on similarities and differences in biochemical composition.
CHEMOTAXONOMISTchemotaxonomist n. One who studies chemotaxonomy.
CHEMOTAXONOMIST n. one who practises chemotaxonomy.
EXOERYTHROCYTICexoerythrocytic adj. Outside of an erythrocyte.
EXOERYTHROCYTIC adj. occurring outside the red blood cells.
HEXYLRESORCINOLhexylresorcinol n. (Organic chemistry) A hexyl derivative of resorcinol that has anaesthetic, antiseptic and antihelmintic properties.
HEXYLRESORCINOL n. a crystalline phenol used as an antiseptic and anthelmintic.
HOMOSEXUALITIEShomosexualities n. Plural of homosexuality.
HOMOSEXUALITY n. the state of being homosexual.
HYDROXYPROLINEShydroxyprolines n. Plural of hydroxyproline.
HYDROXYPROLINE n. an amino acid.
OXYHAEMOGLOBINSoxyhaemoglobins n. Plural of oxyhaemoglobin.
OXYHAEMOGLOBIN n. a loose compound of oxygen and haemoglobin, also OXYHEMOGLOBIN.
PHOTOEXCITATIONphotoexcitation n. (Chemistry) The formation of an excited state by the absorption of a photon.
PHOTOEXCITATION n. the process of exciting the atoms or molecules of a substance by the absorption of radiant energy.
PHOTOOXIDATIONSphotooxidations n. Plural of photooxidation.
PHOTOOXIDATION n. oxidation under the influence of radiant energy, as light.
PHOTOTOXICITIESphototoxicities n. Plural of phototoxicity.
PHOTOTOXICITY n. the state of being phototoxic.
PHYTOTOXICITIESphytotoxicities n. Plural of phytotoxicity.
PHYTOTOXICITY n. the state of being phytotoxic.
XENOMORPHICALLYXENOMORPHIC adv. having a form not its own.
XERORADIOGRAPHYxeroradiography n. A method of X-ray photography which uses an electrically charged metal plate instead of film.
XERORADIOGRAPHY n. radiography used esp. in mammographic screening for breast cancer that produces an image using X-rays in a manner similar to the way an image is produced by light in xerography.
XYLOTYPOGRAPHICxylotypographic adj. Of or pertaining to xylotypography.
XYLOTYPOGRAPHIC adj. relating to, or printed from, wooden type.

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: 204 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: 2 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 7 words


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