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There are 9 thirteen-letter words containing G, I, 2N, 3O and P

GONADOTROPHINgonadotrophin n. Any of a group of protein hormones secreted by gonadotrope cells of the pituitary gland of vertebrates.
GONADOTROPHIN n. a substance that stimulates the gonads.
GONADOTROPINSgonadotropins n. Plural of gonadotropin.
GONADOTROPIN n. a gonadotropic hormone, as follicle-stimulating hormone.
OPPIGNORATIONoppignoration n. (Obsolete) The act of pawning or laying in pledge.
OPPIGNORATION n. the act of pawning, also OPPIGNERATION.
PATHOGNOMONICpathognomonic adj. (Medicine, of a sign or symptom) specifically characteristic or indicative of a particular disease or condition.
PATHOGNOMONIC adj. distinctively characteristic of a particular disease.
PHOTOIONISINGPHOTOIONISE v. to ionize by electromagnetic radiation, also PHOTOIONIZE.
PHOTOIONIZINGphotoionizing adj. That causes or undergoes photoionization.
PHOTOIONIZE v. to ionize by electromagnetic radiation, also PHOTOIONISE.
PROLONGATIONSprolongations n. Plural of prolongation.
PROLONGATION n. the act of prolonging.
PROPORTIONINGproportioning v. Present participle of proportion.
PROPORTIONING n. an adjustment of proportions.
SOUNDPROOFINGsoundproofing v. Present participle of soundproof.
soundproofing n. Something that prevents sound from traveling through it, such as is put on walls so adjacent areas are…
soundproofing n. The act of installing material to dampen sound.

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: 40 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: 4 words
  • Scrabble in Italian: 27 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 7 words


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