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There are 19 twelve-letter words containing E, M, O, P, 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.
MONOPHYSITESmonophysites n. Plural of monophysite.
Monophysites n. Plural of Monophysite.
MONOPHYSITE n. one believing that Christ had but a single divine nature.
MYTHOPOEISMSMYTHOPOEISM n. the making of myths.
MYTHOPOEISTSmythopoeists n. Plural of mythopoeist.
mythopœists n. Plural of mythopœist.
MYTHOPOEIST n. a mythmaker.
PHOTOSYSTEMSphotosystems n. Plural of photosystem.
PHOTOSYSTEM n. either of two photochemical reaction centers consisting chiefly of photosynthetic pigments complexed with protein and occurring in chloroplasts.
PNEUMOCYSTISpneumocystis n. (Pathology) A parasitic fungal organism of the genus Pneumocystis, in humans specifically Pneumocystis jorevicii.
Pneumocystis prop.n. A taxonomic genus within the family Pneumocystidaceae – fungi first thought to be protozoa, including…
PNEUMOCYSTIS n. any protozoan of the genus Pneumocystis, esp. P. carinii, which is a cause of pneumonia.
PROSELYTISMSproselytisms n. Plural of proselytism.
PROSELYTISM n. conversion.
PSAMMOPHYTESpsammophytes n. Plural of psammophyte.
PSAMMOPHYTE n. a plant adapted to growing in sand.
PSYCHOMETERSpsychometers n. Plural of psychometer.
PSYCHOMETER n. an instrument measuring the duration and intensity of mental states.
SCYPHISTOMAEscyphistomae n. Plural of scyphistoma.
SCYPHISTOMA n. the fixed polypoid stage in the life cycle of a scyphozoan, which reproduces asexually by budding or strobilation.
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.
SYMPTOMATISESYMPTOMATISE v. to be a symptom of, also SYMPTOMATIZE.
SYNAPTOSOMESsynaptosomes n. Plural of synaptosome.
SYNAPTOSOME n. a nerve ending that is isolated from homogenized nerve tissue.
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 WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 48 words
  • Scrabble in French: 19 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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