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There are 16 twelve-letter words containing H, N, 3O, P, S and T

MONOPHTHONGSmonophthongs n. Plural of monophthong.
MONOPHTHONG n. two written vowels representing a single sound, e.g. 'oo', 'oa'.
MONOSTROPHESmonostrophes n. Plural of monostrophe.
MONOSTROPHE n. a poem in which all the stanzas or strophes are written in the same metre.
MONOSTROPHICmonostrophic adj. Of or pertaining to monostrophe.
monostrophic n. A monostrophe.
MONOSTROPHIC adj. having the same strophic or stanzaic structure throughout.
ODONTOGRAPHSodontographs n. Plural of odontograph.
ODONTOGRAPH n. an instrument for obtaining curves for gear-teeth.
ODONTOPHORESodontophores n. Plural of odontophore.
ODONTOPHORE n. the rasping apparatus in molluscs.
OPISTHOTONICopisthotonic adj. Relating to opisthotonus.
OPISTHOTONIC adj. of or like opisthotonos, extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region.
OPISTHOTONOSopisthotonos n. (Medicine) Sustained tetanic spasm in which the body is bent backwards and stiffened, as produced by various diseases.
OPISTHOTONOS n. extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region, etc.
ORNITHOSCOPYornithoscopy n. Birdwatching.
ORNITHOSCOPY n. bird watching.
PHONOLOGISTSphonologists n. Plural of phonologist.
PHONOLOGIST n. a student of phonology, the branch of linguistics that deals with systems of sounds.
PHOTOFISSIONphotofission n. (Nuclear physics) Nuclear fission as the result of the absorption of a gamma ray or other high-energy photon.
photofission v. (Nuclear physics) To undergo, or cause to undergo, photofission.
PHOTOFISSION n. nuclear fission induced by gamma rays.
PHOTOIONISEDphotoionised adj. Alternative spelling of photoionized.
PHOTOIONISE v. to ionize by electromagnetic radiation, also PHOTOIONIZE.
PHOTOIONISESPHOTOIONISE v. to ionize by electromagnetic radiation, also PHOTOIONIZE.
PHOTOIONIZESphotoionizes v. Third-person singular simple present indicative form of photoionize.
PHOTOIONIZE v. to ionize by electromagnetic radiation, also PHOTOIONISE.
PHOTOPHONIESPHOTOPHONY n. the art or practice of using the photophone.
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.

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: 71 words
  • Scrabble in French: 9 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 2 words
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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