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List of 13-letter words containing

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There are 16 thirteen-letter words containing E, H, R, 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.
EXOTHERMICITYexothermicity n. (Chemistry, physics, uncountable) The quality or state of being exothermic.
exothermicity n. (Countable) The release of heat during an exothermic reaction.
EXOTHERMICITY n. the state of being exothermic.
HYDROPEROXIDEhydroperoxide n. (Organic chemistry) any mono-substituted derivative of hydrogen peroxide - ROOH.
HYDROPEROXIDE n. a compound containing an O2H group.
HYDROTHORAXEShydrothoraxes n. Plural of hydrothorax.
HYDROTHORAX n. water liquid in the pleural cavity.
HYDROXYACETICHYDROXYACETIC adj. as in hydroxyacetic acid, another name for glycolic acid.
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.
HYPEREXTENDEDhyperextended adj. Extremely long; extended greatly.
hyperextended v. Simple past tense and past participle of hyperextend.
HYPEREXTEND v. to extend so that the angle between bones of a joint is greater than normal.
HYPERPROSEXIAhyperprosexia n. (Medicine, rare) Excessive attention; an abnormal state in which a person concentrates on one thing…
HYPERPROSEXIA n. abnormal powers of perception, as in Australian aboriginal trackers.
HYPERPYREXIALhyperpyrexial adj. Exhibiting or relating to hyperpyrexia.
HYPERPYREXIAL adj. showing hyperpyrexia, an extremely high fever.
HYPERPYREXIAShyperpyrexias n. Plural of hyperpyrexia.
HYPERPYREXIA n. an extremely high fever, with a temperature of 41 degrees Centigrade or above, also HYPERTHERMY.
HYPOPHARYNXEShypopharynxes n. Plural of hypopharynx.
HYPOPHARYNX n. an appendage or thickened fold on the floor of the mouth of many insects that resembles a tongue.
METHOXYCHLORSMETHOXYCHLOR n. a relatively nontoxic organochlorine insecticide.
NASOPHARYNXESnasopharynxes n. Plural of nasopharynx.
NASOPHARYNX n. the upper part of the pharynx continuous with the nasal passages.
ORTHOPYROXENEorthopyroxene n. (Mineralogy) Any pyroxene that forms orthorhombic crystals.
ORTHOPYROXENE n. a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene.
OXYRHYNCHUSESOXYRHYNCHUS n. an Egyptian fish, sacred to the goddess Hathor, represented on coins and sculptures.
PROPOXYPHENESpropoxyphenes n. Plural of propoxyphene.
PROPOXYPHENE n. a narcotic analgesic structurally related to methadone but less addicting.

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 WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 140 words
  • Scrabble in French: 13 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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