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There are 18 twelve-letter words containing I, 3O, P, 2R and T

COPROPRIETORcoproprietor n. A joint proprietor; one who owns a business in conjunction with others.
COPROPRIETOR n. a joint proprietor.
CORPORATIONScorporations n. Plural of corporation.
CORPORATION n. a body corporate legally authorized to act as a single individual.
INCORPORATORincorporator n. One who, or that which, incorporates.
INCORPORATOR n. one who incorporates.
MORPHOTROPICmorphotropic adj. (Crystallography) Of or pertaining to morphotropism.
morphotropic adj. Describing a phase transition due to a change in composition.
morphotropic adj. Describing the phase boundary between tetragonal and rhombohedral regions of a ferroelectric.
ORNITHOMORPHornithomorph n. A figure in ancient art resembling a bird.
ORNITHOMORPH n. a figure or design in the form of a bird.
ORTHOMORPHICorthomorphic adj. (Cartography) conformal.
ORTHOMORPHIC adj. of a map projection, maintaining true shape over a small area and scale in every direction.
ORTHOPTEROIDorthopteroid n. (Entomology) Any of the insects historically included in the order Orthoptera, including the cockroaches…
ORTHOPTEROID n. a member of the Orthoptera, cockroaches.
ORTHOTROPIESORTHOTROPY n. the state of being orthotropic, growing along a vertical axis.
ORTHOTROPISMorthotropism n. The property of being orthotropic or orthotropous.
ORTHOTROPISM n. vertical growth.
PRODITORIOUSproditorious adj. (Obsolete) Treacherous, traitorous.
PRODITORIOUS adj. traitorous; prone to give away secrets.
PROMONTORIESpromontories n. Plural of promontory.
PROMONTORY n. a high point of land or rock projecting into a body of water.
PROPORTIONALproportional adj. (Mathematics) At a constant ratio (to). Two magnitudes (numbers) are said to be proportional if the…
proportional adj. (Chiefly US) In proportion (to), proportionate.
proportional adj. Of a typeface, having characters with natural (non-uniform) width (in contrast to monospace typefaces).
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.
PROROGATIONSprorogations n. Plural of prorogation.
PROROGATION n. the act of prorogating, postponing a meeting.
PROTOHISTORYprotohistory n. The period between prehistory and history, during which a culture or civilization has not yet developed…
PROTOHISTORY n. the study of human beings in the times that immediately antedate recorded history.
PROTOMORPHICprotomorphic adj. (Biology) Having the most primitive character; in the earliest form.
PROTOMORPHIC adj. primordial; primitive.
PROTOTROPHICprototrophic adj. (Biology) Of or pertaining to a prototroph or to prototrophy.
PROTOTROPHIC adj. of bacteria, feeding directly on uncombined elements.
TROPHOTROPICtrophotropic adj. Relating to trophotropy.
TROPHOTROPIC adj. related to trophotropism, direction of growth by nutritional factors.

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: 68 words
  • Scrabble in French: 14 words
  • Scrabble in Spanish: 23 words
  • Scrabble in Italian: 63 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 182 words


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