diallelon

noun
di·al·le·lon | \ ˌdīəˈlēˌlän \
plural diallela\-lə \

Definition of diallelon 

logic

: definition in a circle

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First Known Use of diallelon

circa 1856, in the meaning defined above

History and Etymology for diallelon

Greek diallēlon, neuter of diallēlos

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The first known use of diallelon was circa 1856

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occurring twice a year or every two years

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