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There are 10 twelve-letter words containing M, 2O, P, 3S and T

ASTROCOMPASSastrocompass n. A form of compass in which direction is evaluated by sighting stars of known position.
ASTROCOMPASS n. a navigational instrument for giving directional bearings from the centre of the earth to a particular star.
MISOPROSTOLSSorry, definition not available.
MISPOSITIONSmispositions v. Third-person singular simple present indicative form of misposition.
MISPOSITION v. to position wrongly.
MONOPSONISTSmonopsonists n. Plural of monopsonist.
MONOPSONIST n. a participant in a monopsony.
MOSSTROOPERSmosstroopers n. Plural of mosstrooper.
moss-troopers n. Plural of moss-trooper.
MOSSTROOPER n. (historical) a 17th century border raider.
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.
PHYSOSTOMOUSphysostomous adj. (Zoology) Having a duct to the air bladder.
physostomous adj. (Zoology) Relating to the Physostomi.
PHYSOSTOMOUS adj. of fishes, having a duct connecting the air bladder to part of the alimentary canal.
SOMATOPLASMSsomatoplasms n. Plural of somatoplasm.
SOMATOPLASM n. protoplasm of the somatic cells.
SYNAPTOSOMESsynaptosomes n. Plural of synaptosome.
SYNAPTOSOME n. a nerve ending that is isolated from homogenized nerve tissue.
THEOSOPHISMSTHEOSOPHISM n. theosophical tenets.

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: 25 words
  • Scrabble in French: 13 words
  • Scrabble in Spanish: 12 words
  • Scrabble in Italian: 20 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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