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There are 16 ten-letter words containing 2O, P, R, 2T and Y

AUTOTROPHYautotrophy n. (Biology) The synthesis of food from inorganic substances, using heat or light as a source of energy.
AUTOTROPHY n. the state of being an autotroph, an organism that is able to manufacture its own food from inorganic substances.
HETEROTOPYheterotopy n. (Biology) A deviation from the natural position; abnormal placement.
heterotopy n. (Biology) A deviation from the natural position of parts, supposed to take place over thousands of years…
HETEROTOPY n. displacement of an organ of the body, also HETEROTOPIA.
ORTHOTROPYorthotropy n. The condition of being orthotropic.
ORTHOTROPY n. the state of being orthotropic, growing along a vertical axis.
PHOTOMETRYphotometry n. (Physics) The measurement of various aspects of light, especially its intensity.
photometry n. (Astronomy) The measurement of the intensity and spectrum of light from stars.
PHOTOMETRY n. that branch of science which treats of the measurement of the intensity of light.
PHOTOTROPYphototropy n. Phototropism.
PHOTOTROPY n. change of colour due to wavelength of incident light.
PHYTOTRONSphytotrons n. Plural of phytotron.
PHYTOTRON n. an apparatus that produces climates artificially for the study of plant growth.
PROTECTORYprotectory n. A charitable institution dedicated to the support and protection of orphans or vulnerable children.
protectory adj. Acting as a protector; protective.
PROTECTORY n. an institution for destitute or delinquent children.
PROTOPATHYPROTOPATHY n. first or direct experience.
PROTOPHYTEprotophyte n. (Biology) Any of various primitive organisms such as the slime molds.
PROTOPHYTE n. any unicellular plant, or plant forming only a plasmodium, having reproduction only by fission, gemmation, or cell division.
PROTOTYPALprototypal adj. Of or pertaining to a prototype.
PROTOTYPAL adj. relating to a prototype, also PROTOTYPIC, PROTOTYPICAL.
PROTOTYPEDprototyped adj. Constructed as a prototype.
PROTOTYPE v. to make a prototype.
PROTOTYPESprototypes n. Plural of prototype.
PROTOTYPE v. to make a prototype.
PROTOTYPICprototypic adj. Of or pertaining to a prototype; prototypical.
PROTOTYPIC adj. relating to a prototype, also PROTOTYPAL, PROTOTYPICAL.
PUTTYROOTSputtyroots n. Plural of puttyroot.
PUTTYROOT n. an American orchidaceous plant which flowers in early summer.
THIXOTROPYthixotropy n. (Physics) The reduction of viscosity with increased shear.
thixotropy n. (Medicine) The property of certain gels whereby they become fluids when agitated and return to being…
THIXOTROPY n. the property of certain gels of becoming fluid when agitated and of reverting back to a gel when left to stand.
TROPOPHYTEtropophyte n. (Biology) Any plant that lives in an environment in which heavy rainfall alternates with periods of drought.
TROPOPHYTE n. a plant adapted to alterations of moisture and drought.

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: 50 words
  • Scrabble in French: 10 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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