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There are 17 fifteen-letter words containing N, O, P, R, S, 2T and Y

CRYOPROTECTANTScryoprotectants n. Plural of cryoprotectant.
CRYOPROTECTANT n. a cryoprotective substance.
ERYTHROPOIETINSerythropoietins n. Plural of erythropoietin.
ERYTHROPOIETIN n. a glycoprotein hormone that stimulates the production of red blood cells by stem cells in bone marrow.
HYPERTONICITIEShypertonicities n. Plural of hypertonicity.
HYPERTONICITY n. the condition of being hypertonic.
HYPNOTHERAPISTShypnotherapists n. Plural of hypnotherapist.
HYPNOTHERAPIST n. one who practises hypnotherapy.
INTROSPECTIVELYintrospectively adv. In an introspective manner.
INTROSPECTIVE adv. relating to introspection, also INTROSPECTIONAL.
LITHONTHRYPTICSlithonthryptics n. Plural of lithonthryptic.
LITHONTHRYPTIC n. a medicine for dissolving kidney stones, also LITHONTRIPTIC, LITHOTRIPTIC.
NEUROPLASTICITYneuroplasticity n. The state or quality of being neuroplastic, of having a brain that adapts to experience.
NONPSYCHIATRISTnonpsychiatrist n. One who is not a psychiatrist.
NONPSYCHIATRIST n. someone who is not a psychiatrist.
POLYUNSATURATEDpolyunsaturated adj. (Chemistry) Of or relating to long chain organic compounds that have multiple double bonds; polyunsaturated…
polyunsaturated adj. (Nutrition, of a fat or oil) Having a chemical structure that does not easily change into cholesterol…
POLYUNSATURATED adj. having many double or triple bonds in a molecule.
POLYUNSATURATESpolyunsaturates n. Plural of polyunsaturate.
POLYUNSATURATE n. a fat that is polyunsaturated.
PROCRASTINATORYprocrastinatory adj. Of or pertaining to procrastination.
PROCRASTINATORY adj. tending to procrastinate, also PROCRASTINATIVE.
PROPYLITISATIONPROPYLITISATION n. the process of propylitising, also PROPYLITIZATION.
PROSELYTISATIONproselytisation n. Alternative spelling of proselytization.
PROSELYTISATION n. the act of proselytising, also PROSELYTIZATION.
PROSELYTIZATIONproselytization n. The act or process of proselytizing.
PROSELYTIZATION n. the act of proselytizing, also PROSELYTISATION.
SEPTENTRIONALLYseptentrionally adv. (Obsolete, nonce word) northerly.
SEPTENTRIONAL adv. (obsolete) northern, also SEPTENTRIAL.
TRANSPOSABILITYtransposability n. The quality of being transposable.
TRANSPOSABILITY n. the quality of being transposable.
UNPRETENTIOUSLYunpretentiously adv. In a manner that is not pretentious; sincerely, without affectation.
UNPRETENTIOUS adv. free from pretension.

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: 138 words
  • Scrabble in French: 12 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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