bicyclic

adjective
bi·​cy·​clic | \(ˌ)bī-ˈsī-klik, -ˈsi-\

Definition of bicyclic 

1 : consisting of or arranged in two cycles

2 : containing two usually fused rings in the structure of the molecule

First Known Use of bicyclic

1872, in the meaning defined at sense 1

History and Etymology for bicyclic

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The first known use of bicyclic was in 1872

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bicyclic

adjective
bi·​cy·​clic | \(ˈ)bī-ˈsī-klik, -ˈsik-lik \

Medical Definition of bicyclic 

: containing two usually fused rings in the structure of the molecule

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