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There are 16 fifteen-letter words containing C, H, S and X

ARCHAEOPTERYXESarchaeopteryxes n. Plural of archaeopteryx.
ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits.
CANTHAXANTHINESCANTHAXANTHINE n. a naturally occurring carotenoid used esp. as a color additive for food, also CANTHAXANTHIN.
CEPHALOTHORAXEScephalothoraxes n. Plural of cephalothorax.
CEPHALOTHORAX n. the body, or head with thorax, of spiders, crustaceans, etc.
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.
EXHIBITIONISTICexhibitionistic adj. Having a tendency toward exhibitionism.
EXHIBITIONISTIC adj. characterised by exhibitionism.
EXOTHERMICITIESexothermicities n. Plural of exothermicity.
EXOTHERMICITY n. the state of being exothermic.
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.
HIERACOSPHINXEShieracosphinxes n. Plural of hieracosphinx.
HIERACOSPHINX n. in ancient Egyptian art, a hawk-headed sphinx.
HYDROEXTRACTORShydroextractors n. Plural of hydroextractor.
HYDROEXTRACTOR n. a drying machine that works centrifugally.
HYPEREXCRETIONSHYPEREXCRETION n. excessive excretion.
LEXICOGRAPHISTSlexicographists n. Plural of lexicographist.
LEXICOGRAPHIST n. one who makes dictionaries.
PEROXYSULPHURICPEROXYSULPHURIC adj. as in peroxysulphuric acid.
PHOTOTOXICITIESphototoxicities n. Plural of phototoxicity.
PHOTOTOXICITY n. the state of being phototoxic.
PHYTOTOXICITIESphytotoxicities n. Plural of phytotoxicity.
PHYTOTOXICITY n. the state of being phytotoxic.
PSYCHOSEXUALITYpsychosexuality n. The psychological aspects of sexuality.
PSYCHOSEXUALITY n. the psychic factors of sex.

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: 140 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: 2 words
  • Scrabble in Italian: 1 word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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