n.
Pronunciation: ˌ däk-s ə - ' s ī - ˌ kl ē n
Function: noun
Etymology: d e oxy- + tetra cycline
Date: 1966
: a broad-spectrum tetracycline antibiotic C 22 H 24 N 2 O 8 with potent antibacterial activity that is often taken by travelers to prevent diarrhea