Pronunciation: ˌ s ī -kl ə - ' spo ̇ r- ə n, - ˌ ē n
Variant: also cy · clo · spor · in \ - ' spo ̇ r- ə n \
Function: noun
Etymology: International Scientific Vocabulary cycl- + spor- + 2 -ine
Date: 1976
: an immunosuppressive polypeptide drug C 62 H 111 N 11 O 12 obtained from various imperfect fungi and used especially to prevent rejection of organ transplants