macrocyclic

[ mak-roh-sahy-klik, -sik-lik ]
/ ˌmæk roʊˈsaɪ klɪk, -ˈsɪk lɪk /

adjective Chemistry.

having a ring structure consisting of more than 12 atoms.

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Origin of macrocyclic

First recorded in 1945–50; macro- + cyclic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020