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There are 20 fifteen-letter words containing G, I, 2N, 3O and R

CONGLOMERATIONSconglomerations n. Plural of conglomeration.
CONGLOMERATION n. the act of conglomerating.
ENDOCRINOLOGIESendocrinologies n. Plural of endocrinology.
ENDOCRINOLOGY n. the study of glands.
ENDOCRINOLOGISTendocrinologist n. A person who is skilled at, or practices, endocrinology.
ENDOCRINOLOGIST n. one who studies endocrinology.
NONPHOTOGRAPHICnonphotographic adj. Not photographic.
NONPHOTOGRAPHIC adj. not photographic.
NONRECOGNITIONSnonrecognitions n. Plural of nonrecognition.
NONRECOGNITION n. something that is not recognition.
ORGANOCHLORINESorganochlorines n. Plural of organochlorine.
ORGANOCHLORINE n. a compound of chlorine and an organic radical.
ORTHOGONALISINGorthogonalising v. Present participle of orthogonalise.
ORTHOGONALISE v. to make orthogonal, also ORTHOGONALIZE.
ORTHOGONALIZINGorthogonalizing v. Present participle of orthogonalize.
ORTHOGONALIZE v. to make orthogonal, also ORTHOGONALISE.
OVERCONTROLLINGovercontrolling v. Present participle of overcontrol.
OVERCONTROL v. to control excessively.
PROGNOSTICATIONprognostication n. A statement about or prior knowledge of the future.
PROGNOSTICATION n. an indication in advance.
PROPORTIONATINGproportionating v. Present participle of proportionate.
PROPORTIONATE v. to make proportionate.
RETROCOGNITIONSretrocognitions n. Plural of retrocognition.
RETROCOGNITION n. extrasensory knowledge of past events.
ROENTGENOLOGIESROENTGENOLOGY n. radiology, also RONTGENOLOGY.
ROENTGENOLOGISTroentgenologist n. One who works in roentgenology.
ROENTGENOLOGIST n. one who studies roentgenology, also RONTGENOLOGIST.
ROENTGENOSCOPICROENTGENOSCOPIC adj. relating to use of the roentgenoscope.
RONTGENOLOGICALRONTGENOLOGICAL adj. related to rontgenology.
RONTGENOLOGISTSRONTGENOLOGIST n. a specialist in rontgenology, also ROENTGENOLOGIST.
RONTGENOSCOPIESRONTGENOSCOPY n. observation by means of X-rays.
SYNCHRONOLOGIESsynchronologies n. Plural of synchronology.
SYNCHRONOLOGY n. a chronological arrangement side by side.
UNCHRONOLOGICALunchronological adj. Not chronological.
UNCHRONOLOGICAL adj. not chronological.

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: 144 words
  • Scrabble in French: 19 words
  • Scrabble in Spanish: 16 words
  • Scrabble in Italian: 83 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 14 words


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