trop·​o·​lone | \ ˈträpəˌlōn\
plural -s

Definition of tropolone

: a crystalline unsaturated enolic ketone C7H6O2 containing the seven-membered ring of tropane and tropine — see stipitatic acid, thujaplicin

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First Known Use of tropolone

1945, in the meaning defined above

History and Etymology for tropolone

trop- entry 2 + -ol + -one

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The first known use of tropolone was in 1945

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