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List of 13-letter words containing

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There are 11 thirteen-letter words containing A, C, H, X and Y

ARCHAEOPTERYXarchaeopteryx n. Alternative spelling of archeopteryx.
Archaeopteryx prop.n. A taxonomic genus within the family Archaeopterygidae – known from fossils and widely accepted as the…
archæopteryx n. Rare spelling of archeopteryx.
CHALCEDONYXESCHALCEDONYX n. an agate of alternating white opaque and greyish transparent chalcedony.
CHEMOTAXONOMYchemotaxonomy n. (Biochemistry, genetics) The classification or taxonomy of organisms based on differences and similarities…
CHEMOTAXONOMY n. the classification of plants and animals based on similarities and differences in biochemical composition.
CYCLOHEXANONEcyclohexanone n. (Organic chemistry) The alicyclic ketone obtained from cyclohexane by the replacement of a methylene…
CYCLOHEXANONE n. a liquid ketone used esp. as a solvent and in organic synthesis.
HEXADACTYLOUShexadactylous adj. (Zoology) Having six fingers or toes.
HEXADACTYLOUS adj. having six fingers, also HEXADACTYLIC.
HYDROXYACETICHYDROXYACETIC adj. as in hydroxyacetic acid, another name for glycolic acid.
PHYCOXANTHINSPHYCOXANTHIN n. a yellow pigment found in diatoms, brown seaweeds etc.
SCEUOPHYLAXESSCEUOPHYLAX n. a sacristan.
TACHYPHYLAXEStachyphylaxes n. Plural of tachyphylaxis.
TACHYPHYLAXIS n. very rapid development of tolerance or immunity to the effects of a drug.
TACHYPHYLAXIStachyphylaxis n. (Medicine) A rapidly decreasing response to a drug following administration of the initial doses.
TACHYPHYLAXIS n. very rapid development of tolerance or immunity to the effects of a drug.
XYLOGRAPHICALxylographical adj. Xylographic.
XYLOGRAPHICAL adj. relating to xylography, the art of making engravings on wood, also XYLOGRAPHIC.

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: 72 words
  • Scrabble in French: 5 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 1 word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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