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 There are 8 thirteen-letter words containing H, I, K, 2O and R| ARRHENOTOKIES | • ARRHENOTOKY n. giving birth only to boys. |  | COCKTHROWINGS | • cock␣throwings n. Plural of cock throwing. • COCKTHROWING n. the old sport of throwing sticks at a cock.
 |  | ORTHOPINAKOID | • ORTHOPINAKOID n. in monoclinic crystals, a form consisting of two faces parallel to the orthodiagonal and the vertical axis. |  | POIKILOTHERMS | • poikilotherms n. Plural of poikilotherm. • POIKILOTHERM n. an organism that takes on the temperature of its surroundings.
 |  | POIKILOTHERMY | • poikilothermy n. (Biology) The quality of having a body temperature that varies or fluctuates, depending on the temperature… • POIKILOTHERMY n. the state of being cold-blooded, also POIKILOTHERMISM.
 |  | ROCKHOUNDINGS | • ROCKHOUNDING n. of a rock-collector, looking for rocks. |  | SKEUOMORPHISM | • skeuomorphism n. The incorporation of obsolete or skeuomorphic elements into a design, for familiarity or out of tradition… • SKEUOMORPHISM n. the state of being a skeuomorph.
 |  | THROMBOKINASE | • thrombokinase 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.
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 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.
 
 See this list for:English Wiktionary: 98 wordsScrabble in French: 4 wordsScrabble in Spanish: no wordScrabble in Italian: 1 wordScrabble in German: no wordScrabble in Romanian: 2 words
 
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