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There are 17 fifteen-letter words containing E, H, 2L, O, P, S and Y

ATMOSPHERICALLYatmospherically adv. In an atmospheric manner.
atmospherically adv. With regard to the atmosphere.
ATMOSPHERICAL adv. related to the atmosphere, also ATMOSPHERIC.
GEOSTROPHICALLYgeostrophically adv. By means of, or in terms of, geostrophy.
GEOSTROPHIC adv. relating to deflection due to effects of Earth's rotation.
HYPOCRYSTALLINEhypocrystalline adj. (Geology, of igneous rocks) having both glass and crystalline components.
HYPOCRYSTALLINE adj. of igneous rocks, having both glass and crystalline components.
HYPSOMETRICALLYhypsometrically adv. By means of, or in terms of, hypsometry.
HYPSOMETRICAL adv. of, relating to, or indicating elevation (as on a map), also HYPSOMETRIC.
IONOSPHERICALLYionospherically adv. In terms of the ionosphere.
IONOSPHERIC adv. relating to the ionosphere.
MEGASPOROPHYLLSmegasporophylls n. Plural of megasporophyll.
MEGASPOROPHYLL n. a specialised leaf bearing or subtending one or more megasporangia.
MYELENCEPHALONSMYELENCEPHALON n. the posterior part of the developing vertebrate hindbrain or the corresponding part of the adult brain composed of the medulla oblongata.
OSTEOPATHICALLYosteopathically adv. By means of osteopathy.
OSTEOPATHIC adv. relating to osteopathy.
PHYLLOSILICATESphyllosilicates n. Plural of phyllosilicate.
PHYLLOSILICATE n. any of a class of silicate minerals, including talc, consisting of thin sheets.
POLYPHLOESBOEANpolyphloesboean adj. (Poetic) Loudly roaring; used to describe the ocean.
POLYPHLOESBOEAN adj. loud-roaring, also POLYPHLOISBIC.
POLYSYNTHETICALpolysynthetical adj. Alternative form of polysynthetic.
POLYSYNTHETICAL adj. made up of many separate elements, also POLYSYNTHETIC.
PREHISTORICALLYprehistorically adv. In a prehistoric manner.
prehistorically adv. Regarding prehistory.
PREHISTORICAL adv. relating to the time before historical records, also PREHISTORIC.
PSEPHOLOGICALLYpsephologically adv. In terms of, or by means of, psephology.
PSEPHOLOGICAL adv. related to psephology.
PSYCHODELICALLYPSYCHODELIC adv. relating to a state of heightened perception, also PSYCHEDELIC.
PSYCHOGENICALLYpsychogenically adv. In a psychogenic way.
PSYCHOGENIC adv. derived from the mind.
SYLLABOGRAPHIESSYLLABOGRAPHY n. use of a writing system consisting of characters for syllables rather than for individual sounds or whole words.
ZYGOPHYLLACEOUSzygophyllaceous adj. (Botany) Of or relating to the family Zygophyllaceae of bean-capers, caltrops, and related plants.
ZYGOPHYLLACEOUS adj. belonging to the Zygophyllaceae, the bean caper family.

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: 106 words
  • Scrabble in French: 12 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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