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List of 13-letter words containing

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There are 17 thirteen-letter words containing I, L, 2N, 2O, P and S

COMPANIONLESScompanionless adj. Without a companion; friendless, alone.
COMPANIONLESS adj. without a companion.
COMPLANATIONSCOMPLANATION n. the state of being flattened.
INCOMPLETIONSincompletions n. Plural of incompletion.
INCOMPLETION n. lack of completeness.
MELANOTROPINSmelanotropins n. Plural of melanotropin.
MELANOTROPIN n. a hormone secreted by the pituitary gland which stimulates the production of melanin by melanocytes.
MONODELPHIANSmonodelphians n. Plural of monodelphian.
MONODELPHIAN n. any placental mammal that is a member of the group Monodelphi.
NONCOMPLYINGSNONCOMPLYING n. the failure to comply; noncompliance.
NONEXPLOSIVESSorry, definition not available.
PHILODENDRONSphilodendrons n. Plural of philodendron.
PHILODENDRON n. any of various aroid plants cultivated for their showy foliage.
PLASTOQUINONEplastoquinone n. (Biochemistry) a quinone, related to the carotenoids, involved in the electron transport process of photosynthesis.
PLASTOQUINONE n. a plant substance that is related to vitamin K and plays a role in photosynthetic phosphorylation.
PREDNISOLONESprednisolones n. Plural of prednisolone.
PREDNISOLONE n. a drug similar to cortisone, used as an anti-inflammatory, also PREDNISONE.
PROLONGATIONSprolongations n. Plural of prolongation.
PROLONGATION n. the act of prolonging.
PRONOMINALISEPRONOMINALISE v. to make into or treat as a pronoun, also PRONOMINALIZE.
SCOLOPENDRINEscolopendrine adj. (Zoology) Like or pertaining to the Scolopendra.
SCOLOPENDRINE adj. like a centipede of the family Scolopendridae.
SNOWPLOUGHINGsnowploughing v. Present participle of snowplough.
snow␣ploughing v. Present participle of snow plough.
SNOWPLOUGH v. to clear with a snowplough, also SNOWPLOW.
SPOROPOLLENINsporopollenin n. (Botany) A combination of biopolymers, observed in the exine layer of the spore and pollen wall.
SPOROPOLLENIN n. a polymer that comprises the exine (outer layer of the wall) of spores and pollen grains.
SULPHONATIONSsulphonations n. Plural of sulphonation.
SULPHONATION n. the act of sulphonating.
UNAPOLOGISINGUNAPOLOGISING adj. not apologising, also UNAPOLOGIZING.

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: 116 words
  • Scrabble in French: 59 words
  • Scrabble in Spanish: 16 words
  • Scrabble in Italian: 22 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 22 words


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