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There are 14 twelve-letter words containing D, H, I, 3O, R and S

CHONDRIOSOMEchondriosome n. Synonym of mitochondrion.
CHONDRIOSOME n. an old name for a mitochondrion, a minute body generating ATP in the cytoplasm of a cell.
CHORDOTOMIESchordotomies n. Plural of chordotomy.
CHORDOTOMY n. the surgical division of a bundle of nerve fibres in the spinal cord, also CORDOTOMY.
DICHROOSCOPEDICHROOSCOPE n. an instrument for examining crystals for dichroism, also DICHROISCOPE, DICHROSCOPE.
DISCOPHOROUSdiscophorous adj. (Zoology) Having a gelatinous bell or disk.
DISCOPHOROUS adj. relating to the Discophora, an order of jellyfish.
DROMOPHOBIASDROMOPHOBIA n. a fear of crossing streets.
ORTHODONTIASORTHODONTIA n. the rectification of crookedness in the teeth, also ORTHODONTICS.
ORTHODONTICSorthodontics n. (Medicine) A specialty of dentistry concerned with correcting misalignment of teeth.
ORTHODONTICS n. the rectification of crookedness in the teeth, also ORTHODONTIA.
ORTHODONTISTorthodontist n. An orthodontic dentist.
ORTHODONTIST n. one who practises orthodontics.
ORTHODROMICSorthodromics n. Orthodromic navigation.
ORTHODROMICS n. the act or art of sailing on a great circle, also ORTHODROMY.
ORTHODROMIESORTHODROMY n. the act or art of sailing on a great circle, also ORTHODROMICS.
PHOTOPERIODSphotoperiods n. Plural of photoperiod.
PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight.
TRAITORHOODSTRAITORHOOD n. the state of being a traitor.
WIDOWERHOODSwidowerhoods n. Plural of widowerhood.
WIDOWERHOOD n. the fact or state of being a widower.
WITHOUTDOORSwithoutdoors adv. (Archaic) outdoors.
WITHOUTDOORS adv. outdoors.

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: 53 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: 5 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 4 words


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