macrocyclic
adjective
mac·ro·cy·clic ˌma-krō-ˈsi-klik 
-ˈsī-
: containing or being a chemical ring that consists usually of 15 or more atoms
Example Sentences
Recent Examples on the Web Another clean fragrance brand, St. Rose, imbues its creations with a macrocyclic synthetic musk called juniper lactone to lend scents like St. Rose’s Desert Nomad an earthy bounce. 
ELLE, 30 Apr. 2022 Ivermectin was developed by Merck in the 1970s, decades before molnupiravir, and is classified as a macrocyclic lactone. Miriam Fauzia, USA TODAY, 12 Oct. 2021 There are three major classes of synthetic musks: nitro musks, polycyclic musk compounds and macrocyclic musk compounds. John Cumbers, Forbes, 12 May 2021
ELLE, 30 Apr. 2022 Ivermectin was developed by Merck in the 1970s, decades before molnupiravir, and is classified as a macrocyclic lactone. Miriam Fauzia, USA TODAY, 12 Oct. 2021 There are three major classes of synthetic musks: nitro musks, polycyclic musk compounds and macrocyclic musk compounds. John Cumbers, Forbes, 12 May 2021 Word History
Etymology
macro- + cyclic entry 1
First Known Use
1932, in the meaning defined above
Medical Definition
macrocyclic
adjective
mac·ro·cy·clic ˌmak-rō-ˈsik-lik, -ˈsī-klik
: containing or being a chemical ring that consists usually of 15 or more atoms
a macrocyclic antibiotic