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List of 13-letter words containing

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There are 20 thirteen-letter words containing H, L, X and Y

CHALCEDONYXESCHALCEDONYX n. an agate of alternating white opaque and greyish transparent chalcedony.
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.
CYCLOHEXIMIDEcycloheximide n. (Organic chemistry) An agricultural fungicide produced by the bacterium Streptomyces griseus, widely…
CYCLOHEXIMIDE n. an agricultural fungicide that inhibits protein synthesis and is obtained from a soil bacterium, Streptomyces griseus.
EXHAUSTLESSLYexhaustlessly adv. Without running out or coming to an end.
EXHAUSTLESS adv. inexhaustible.
HAEMATOXYLINShaematoxylins n. Plural of haematoxylin.
HAEMATOXYLIN n. a dye obtained from logwood, also HEMATOXYLIN.
HAEMATOXYLONSHAEMATOXYLON n. any thorny leguminous tree of the genus Haematoxylon, esp. the logwood, of tropical America and SW Africa, the heartwood of which yields the dye haematoxylin.
HEXADACTYLOUShexadactylous adj. (Zoology) Having six fingers or toes.
HEXADACTYLOUS adj. having six fingers, also HEXADACTYLIC.
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.
HYDROXYLAMINEhydroxylamine n. (Inorganic chemistry) An explosive inorganic derivative of ammonia, NH2OH, used as a reducing agent…
hydroxylamine n. (Organic chemistry) Any organic derivative of this compound.
HYDROXYLAMINE n. a colorless odorless nitrogenous base that resembles ammonia in its reactions.
HYDROXYLATINGhydroxylating v. Present participle of hydroxylate.
HYDROXYLATE v. to introduce hydroxyl into.
HYDROXYLATIONhydroxylation n. (Organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement…
HYDROXYLATION n. the act of hydroxylating.
HYPERPYREXIALhyperpyrexial adj. Exhibiting or relating to hyperpyrexia.
HYPERPYREXIAL adj. showing hyperpyrexia, an extremely high fever.
INEXHAUSTIBLYinexhaustibly adv. In an inexhaustible manner.
inexhaustibly adv. To an inexhaustible degree.
INEXHAUSTIBLE adv. not exhaustible.
METHOXYCHLORSMETHOXYCHLOR n. a relatively nontoxic organochlorine insecticide.
OXYHEMOGLOBINoxyhemoglobin n. (American spelling) Alternative form of oxyhaemoglobin.
OXYHEMOGLOBIN n. a loose compound of oxygen and haemoglobin, also OXYHAEMOGLOBIN.
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.
XIPHOPHYLLOUSxiphophyllous adj. (Botany) Having sword-shaped leaves.
XIPHOPHYLLOUS adj. having sword-shaped leaves.
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: 171 words
  • Scrabble in French: 13 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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