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There are 18 thirteen-letter words containing E, H, N, 2O, P, S and Y

HYMENOPTERONShymenopterons n. Plural of hymenopteron.
HYMENOPTERON n. an order of insect having four membranous wings, e.g. ants, bees, wasps, also HYMENOPTERAN.
HYMENOPTEROUShymenopterous adj. (Entomology) Of the order Hymenoptera; hymenopteran.
HYMENOPTEROUS adj. having four membranous wings, as do ants, bees and wasps.
HYPERBOLAEONSHYPERBOLAEON n. a term in in Greek prosody.
NARCOHYPNOSESNARCOHYPNOSIS n. the use of narcotics to produce hypnosis.
ONYCHOPHAGIESONYCHOPHAGY n. the habit of biting one's fingernails.
PHARYNGOSCOPEpharyngoscope n. An instrument used to examine the pharynx.
PHARYNGOSCOPE n. an instrument for inspecting the pharynx.
PHOTOSYNTHATEphotosynthate n. (Biochemistry) Any compound that is a product of photosynthesis.
PHOTOSYNTHATE n. a product of photosynthesis.
PHYSIOGNOMIESphysiognomies n. Plural of physiognomy.
PHYSIOGNOMY n. the general appearance of anything, esp. the face, also FISNOMIE, PHISNOMY, VISNOMIE, VISNOMY.
PHYTOESTROGENphytoestrogen n. (Biochemistry) A substance found in certain plants (such as genistein) which can produce effects like…
PHYTOESTROGEN n. a plant substance similar to a weak oestrogen.
PHYTOHORMONESphytohormones n. Plural of phytohormone.
PHYTOHORMONE n. a plant hormone, regulating growth.
PHYTONADIONESPHYTONADIONE n. phylloquinone, vitamin K1.
PROPOXYPHENESpropoxyphenes n. Plural of propoxyphene.
PROPOXYPHENE n. a narcotic analgesic structurally related to methadone but less addicting.
PSYCHOSURGEONpsychosurgeon n. One who carries out psychosurgery.
PSYCHOSURGEON n. a practitioner of psychosurgery.
PYRITOHEDRONSpyritohedrons n. Plural of pyritohedron.
PYRITOHEDRON n. a pentagonal dodecahedron.
RHYNCHOPHORESRHYNCHOPHORE n. a member of the Rhyncophora, weevils.
SPHYGMOPHONESsphygmophones n. Plural of sphygmophone.
SPHYGMOPHONE n. an instrument for hearing the pulse.
STENOPHYLLOUSstenophyllous adj. (Botany) Having narrow leaves.
STENOPHYLLOUS adj. with narrow leaves.
SYNCHROSCOPESsynchroscopes n. Plural of synchroscope.
SYNCHROSCOPE n. an instrument for detecting whether two moving parts are synchronized.

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: 107 words
  • Scrabble in French: 30 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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