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List of 13-letter words containing

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There are 16 thirteen-letter words containing A, L, 2N, 2O, P and S

AEROPLANKTONSAEROPLANKTON n. minute organisms carried in the air.
COMPANIONLESScompanionless adj. Without a companion; friendless, alone.
COMPANIONLESS adj. without a companion.
COMPLANATIONSCOMPLANATION n. the state of being flattened.
CRYOPLANKTONSCRYOPLANKTON n. minute organisms, esp. algae, living in ice, snow, or icy water.
HOLOPLANKTONSHOLOPLANKTON n. organisms which remain as plankton throughout their whole life cycle.
MELANOTROPINSmelanotropins n. Plural of melanotropin.
MELANOTROPIN n. a hormone secreted by the pituitary gland which stimulates the production of melanin by melanocytes.
MEROPLANKTONSmeroplanktons n. Plural of meroplankton.
MEROPLANKTON n. plankton consisting of certain larvae that do not spend all their life as plankton.
MONODELPHIANSmonodelphians n. Plural of monodelphian.
MONODELPHIAN n. any placental mammal that is a member of the group Monodelphi.
NANOPLANKTONSnanoplanktons n. Plural of nanoplankton.
NANOPLANKTON n. very small plankton, also NANNOPLANKTON.
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.
PROLONGATIONSprolongations n. Plural of prolongation.
PROLONGATION n. the act of prolonging.
PRONOMINALISEPRONOMINALISE v. to make into or treat as a pronoun, also PRONOMINALIZE.
SPLANCHNOLOGYsplanchnology n. (Anatomy, obsolete) The scientific study of the viscera.
SPLANCHNOLOGY n. the study of the entrails or viscera.
SPONTANEOUSLYspontaneously adv. In a spontaneous manner; naturally; voluntarily.
SPONTANEOUS adv. acting by its own impulse or natural law.
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: 109 words
  • Scrabble in French: 37 words
  • Scrabble in Spanish: 17 words
  • Scrabble in Italian: 40 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 24 words


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