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There are 19 twelve-letter words containing D, E, 2I, 2O, P and R

AECIDIOSPOREAECIDIOSPORE n. a spore produced in an aecidium.
BASIDIOSPOREbasidiospore n. (Biology) A sexually reproductive spore produced by fungi of the phylum Basidiomycota.
BASIDIOSPORE n. a spore produced by a basidium.
CONIDIOPHOREconidiophore n. A fungal hypha that produces conidia.
CONIDIOPHORE n. a hypha that produces conidia.
CONIDIOSPOREconidiospore n. (Biology) A unicellular spore produced asexually by a fungus.
CONIDIOSPORE n. a conidium.
DEPOSITORIESdepositories n. Plural of depository.
DEPOSITORY n. a place where anything is deposited, also DEPOSITARY.
DIAGEOTROPICdiageotropic adj. (Botany) Relating to, or exhibiting, diageotropism.
DIAGEOTROPIC adj. tending to grow at right angles to the line of gravity.
DICHROISCOPEdichroiscope n. Alternative form of dichroscope.
DICHROISCOPE n. an instrument for investigating the dichroism of solutions or crystals, also DICHROOSCOPE, DICHROSCOPE.
DISOPERATIONDISOPERATION n. a mutually harmful relationship between two organisms in a community.
EPITROCHOIDSepitrochoids n. Plural of epitrochoid.
EPITROCHOID n. a curve like an epicycloid but generated by any point on a radius.
PERIODONTIASPERIODONTIA n. the branch of dentistry concerned with periodontal diseases.
PERIODONTICSperiodontics n. (Dentistry) The study of supporting structures of teeth—gums, alveolar bone, cementum, and the periodontal…
PERIODONTICS n. the study of gums, as a branch of dentistry.
PERIODONTISTperiodontist n. A dentist whose speciality is periodontics.
PERIODONTIST n. a dentist specialising in periodontics.
PEROXIDATIONperoxidation n. (Chemistry) Any oxidation reaction, especially of an oxide, that produces a peroxide.
peroxidation n. (Organic chemistry) The reaction of a double bond with a peroxide.
PEROXIDATION n. the creation of a peroxide.
PRECONDITIONprecondition n. A condition that requires satisfaction before taking a course of action.
precondition n. A medical illness, ailment, or adverse condition that exists before an insurance policy takes effect.
precondition v. (Medicine, biology) To condition in advance.
PROPANEDIOICPROPANEDIOIC adj. as in propanedioic acid, a white crystalline acid, aka malonic acid.
RADIOISOTOPEradioisotope n. (Physics) a radioactive isotope of an element.
RADIOISOTOPE n. a radioactive isotope.
RADIOPHONIESRADIOPHONY n. the art or practice of using the radiophone.
RADIOSCOPIESradioscopies n. Plural of radioscopy.
RADIOSCOPY n. examination of opaque bodies by X-rays.
REPOSITIONEDrepositioned v. Simple past tense and past participle of reposition.
REPOSITION v. to change the position of.

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: 98 words
  • Scrabble in French: 22 words
  • Scrabble in Spanish: 32 words
  • Scrabble in Italian: 71 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 98 words


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