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List of 15-letter words containing

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There are 20 fifteen-letter words containing 3E, O, P, T and Y

ARCHAEOPTERYXESarchaeopteryxes n. Plural of archaeopteryx.
ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits.
CYCLOPENTADIENEcyclopentadiene n. (Organic chemistry) an unsaturated alicyclic hydrocarbon, C5H6; it forms complexes with some transition…
CYCLOPENTADIENE n. a colourless liquid unsaturated cyclic hydrocarbon obtained in the cracking of petroleum hydrocarbons and the distillation of coal tar, used in the manufacture of plastics and insecticides.
DAGUERREOTYPERSdaguerreotypers n. Plural of daguerreotyper.
DAGUERREOTYPER n. one who develops daguerreotypes, also DAGUERREOTYPIST.
DAGUERREOTYPIESDAGUERREOTYPY n. the art of daguerreotyping.
DEVELOPMENTALLYdevelopmentally adv. In terms of development.
DEVELOPMENTAL adv. relating to development.
DIPHENYLKETONESdiphenylketones n. Plural of diphenylketone.
DIPHENYLKETONE n. the aromatic ketone benzophenone.
HEMISPHERECTOMYhemispherectomy n. (Neurosurgery) Surgical removal of a hemisphere of the brain, usually performed to control otherwise…
HYPEREXCRETIONSHYPEREXCRETION n. excessive excretion.
HYPEREXTENSIONShyperextensions n. Plural of hyperextension.
HYPEREXTENSION n. the extension of a joint beyond its normal range.
HYPERSECRETIONShypersecretions n. Plural of hypersecretion.
HYPERSECRETION n. excessive secretion.
HYPERVELOCITIEShypervelocities n. Plural of hypervelocity.
HYPERVELOCITY n. a high or relatively high velocity, as thousands of feet or meters per second.
MEGAGAMETOPHYTEmegagametophyte n. (Biology) Any gametophyte that develops from a megaspore.
megagametophyte n. (Biology) A female gametophyte.
MEGAGAMETOPHYTE n. the gametophyte developing vegetatively from the megaspore of a heterosporous plant.
OVEREMPLOYMENTSOVEREMPLOYMENT n. the situation where workers cannot reduce the time or the number of hours they spend earning an income.
PHOTOTYPESETTERphototypesetter n. A machine used in phototypesetting.
phototypesetter n. One who phototypesets for their work.
PHOTOTYPESETTER n. one who does phototypesetting.
POLYELECTROLYTEpolyelectrolyte n. A polymeric electrolyte (such as a protein).
POLYELECTROLYTE n. a jellylike plastic compounded of two polymers, one charged positively and one negatively.
PYRETOTHERAPIESPYRETOTHERAPY n. medical treatment by causing fever.
RETROSPECTIVELYretrospectively adv. In a retrospective manner.
RETROSPECTIVE adv. looking back.
SUPERHETERODYNEsuperheterodyne adj. (Electronics) Pertaining to a technique used in radio and television receivers to tune to a particular…
superheterodyne n. A receiver of this kind.
SUPERHETERODYNE n. applied to radio reception in which oscillations of slightly different frequency are imposed on the received oscillations, producing beats of a frequency above audio-frequency which are easily amplified.
THREEPENNYWORTHthreepennyworth n. (Dated) A portion worth threepence.
THREEPENNYWORTH n. goods to the value of threepence, also THREEPENCEWORTH.
UNDEREMPLOYMENTunderemployment n. The condition of being underemployed.
UNDEREMPLOYMENT n. the condition in which people in a labor force are employed at less than full-time or regular jobs or at jobs inadequate with respect to their training or economic needs.

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: 167 words
  • Scrabble in French: 36 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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