| keno | (noun) a game in which numbered balls are drawn at random and players cover the corresponding numbers on their cards | Synonyms: beano, bingo, lotto |
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| kenogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cainogenesis, cenogenesis, kainogenesis |
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| kenosis | (noun) the concept of emptying one's own will and receive God's will, in Catholicism | - |
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| kenotron | (noun) a type of vacuum tube formerly used as a high-voltage rectifier. | - |
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