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There are 15 twelve-letter words containing M, O, P, R, 2S, T and Y

CRYPTOSYSTEMcryptosystem n. A system of cryptography.
HYPSOMETRIESHYPSOMETRY n. the art of measuring the heights of places on the earth's surface.
HYPSOMETRISTHYPSOMETRIST n. a practitioner of hypsometry, the measuring the heights of places on the earth's surface.
MASSOTHERAPYmassotherapy n. (Massage) massage as a form of therapy.
MASSOTHERAPY n. therapy using massage.
MYOGRAPHISTSMYOGRAPHIST n. one who operates a myograph.
POLYAMORISTSpolyamorists n. Plural of polyamorist.
POLYCROTISMSPOLYCROTISM n. the state of having several beats to each heartbeat.
PROSELYTISMSproselytisms n. Plural of proselytism.
PROSELYTISM n. conversion.
PSYCHOMETERSpsychometers n. Plural of psychometer.
PSYCHOMETER n. an instrument measuring the duration and intensity of mental states.
SAPROPHYTISMsaprophytism n. The condition of being saprophytic.
SAPROPHYTISM n. being a saprophyte.
SPERMOPHYTESspermophytes n. Plural of spermophyte.
SPERMOPHYTE n. any member of the Spermatophyta, seed-bearing plants, also SPERMAPHYTE.
STREPTOMYCESstreptomyces n. Any of several bacteria, of the genus Streptomyces, found in soil, several of which produce antibiotics.
Streptomyces prop.n. A taxonomic genus within the family Streptomycetaceae – streptomyces bacteria.
STREPTOMYCES n. any of a genus of mostly soil streptomycetes, including some that form antibiotics.
TROPOMYOSINStropomyosins n. Plural of tropomyosin.
TROPOMYOSIN n. a filamentous protein which controls the interaction of actin and myosin in muscle fibres.
TRYPANOSOMEStrypanosomes n. Plural of trypanosome.
TRYPANOSOME n. a parasite causing sleeping sickness.
XEROPHYTISMSXEROPHYTISM n. being a xerophyte.

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: 28 words
  • Scrabble in French: 3 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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