n.
Pronunciation: ˌ te-tr ə - ' s ī - ˌ kl ē n
Function: noun
Etymology: International Scientific Vocabulary tetracycl ic having four fused hydrocarbon rings + 2 -ine
Date: 1952
: a yellow crystalline broad-spectrum antibiotic C 22 H 24 N 2 O 8 produced by streptomyces or synthetically also : any of several chemically related antibiotics (as doxycycline)