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There are 9 twelve-letter words containing D, E, I, 3O, P and R

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.
DICHROOSCOPEDICHROOSCOPE n. an instrument for examining crystals for dichroism, also DICHROISCOPE, DICHROSCOPE.
ORTHOPTEROIDorthopteroid n. (Entomology) Any of the insects historically included in the order Orthoptera, including the cockroaches…
ORTHOPTEROID n. a member of the Orthoptera, cockroaches.
PHOTOPERIODSphotoperiods n. Plural of photoperiod.
PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight.
PROPORTIONEDproportioned adj. Having a proportion.
proportioned v. Simple past tense and past participle of proportion.
PROPORTION v. to adjust (a part or thing) in size relative to other parts or things.
PROTOCOLISEDprotocolised v. Simple past tense and past participle of protocolise.
PROTOCOLISE v. to make a protocol of, also PROTOCOLIZE.
PROTOCOLIZEDprotocolized v. Simple past tense and past participle of protocolize.
PROTOCOLIZE v. to make a protocol of, also PROTOCOLISE.
RADIOISOTOPEradioisotope n. (Physics) a radioactive isotope of an element.
RADIOISOTOPE n. a radioactive isotope.

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: 59 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: 18 words
  • Scrabble in Italian: 21 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 20 words


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