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List of 13-letter words containing

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There are 9 thirteen-letter words containing H, K, N, 2O and T

ARRHENOTOKIESARRHENOTOKY n. giving birth only to boys.
BUTTONHOOKINGbuttonhooking v. Present participle of buttonhook.
BUTTONHOOK v. to make a kind of offensive play in American football.
COCKTHROWINGScock␣throwings n. Plural of cock throwing.
COCKTHROWING n. the old sport of throwing sticks at a cock.
HETEROKARYONSheterokaryons n. Plural of heterokaryon.
HETEROKARYON n. a cell, as in the mycelium of a fungus, that contains two or more genetically unlike nuclei.
HOLOPLANKTONSHOLOPLANKTON n. organisms which remain as plankton throughout their whole life cycle.
ORTHOPINAKOIDORTHOPINAKOID n. in monoclinic crystals, a form consisting of two faces parallel to the orthodiagonal and the vertical axis.
PHYTOPLANKTONphytoplankton n. Plankton, especially those small in size, that obtain energy by photosynthesis.
PHYTOPLANKTON n. vegetable plankton, that includes diatoms, desmids, and dinoflagellates.
STOCKHOLDINGSstockholdings n. Plural of stockholding.
STOCKHOLDING n. a holding of stock.
THROMBOKINASEthrombokinase n. (Biochemistry) A proteolytic enzyme that converts prothrombin into thrombin during the clotting of blood.
THROMBOKINASE n. an enzyme active in the clotting of blood, aka thromboplastin.

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: 121 words
  • Scrabble in French: 2 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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