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There are 17 twelve-letter words containing E, 3O, P, 2S and T

COPROSTEROLSCOPROSTEROL n. a compound formed from cholesterol in the intestine.
COSMOPOLITEScosmopolites n. Plural of cosmopolite.
Cosmopolites prop.n. A taxonomic genus within the family Curculionidae – many weevils.
COSMOPOLITE n. a cosmopolitan person or organism.
FOETOSCOPIESfoetoscopies n. Plural of foetoscopy.
FOETOSCOPY n. a procedure for viewing the fetus directly, within the uterus, also FETOSCOPY.
MONOPTEROSESMONOPTEROS n. a building with single ring of columns supporting a roof.
MONOSTROPHESmonostrophes n. Plural of monostrophe.
MONOSTROPHE n. a poem in which all the stanzas or strophes are written in the same metre.
MOSSTROOPERSmosstroopers n. Plural of mosstrooper.
moss-troopers n. Plural of moss-trooper.
MOSSTROOPER n. (historical) a 17th century border raider.
OCTOSEPALOUSOCTOSEPALOUS adj. having eight sepals.
OOPHORITISESOOPHORITIS n. inflammation of the ovaries.
OSTEOPOROSESosteoporoses n. Plural of osteoporosis.
OSTEOPOROSIS n. development of a porous structure in bone due to loss of calcium, resulting in brittleness.
OSTEOPOROSISosteoporosis n. (Pathology) A disease, occurring especially in women following menopause, in which the bones become…
OSTEOPOROSIS n. development of a porous structure in bone due to loss of calcium, resulting in brittleness.
PHOTOIONISESPHOTOIONISE v. to ionize by electromagnetic radiation, also PHOTOIONIZE.
PHOTOSENSORSphotosensors n. Plural of photosensor.
PHOTOSENSOR n. a detector that is sensitive to electromagnetic radiation.
PHOTOTONUSESPHOTOTONUS n. the sensitivity of a living organism to light.
PROCTOSCOPESproctoscopes n. Plural of proctoscope.
PROCTOSCOPE n. an instrument for examining the rectum.
PROTOCOLISESprotocolises v. Third-person singular simple present indicative form of protocolise.
PROTOCOLISE v. to make a protocol of, also PROTOCOLIZE.
STROBOSCOPESstroboscopes n. Plural of stroboscope.
STROBOSCOPE n. an instrument for studying motion using flashes of light.
TROPHOBIOSEStrophobioses n. Plural of trophobiosis.
TROPHOBIOSIS n. exchange of nutriment in symbiotic relationship.

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: 75 words
  • Scrabble in French: 20 words
  • Scrabble in Spanish: 24 words
  • Scrabble in Italian: 30 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 14 words


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