doxycycline
Concise Oxford English Dictionary © 2008 Oxford University Press:
doxycycline /ˌdɒksɪˈsʌɪkliːn, -lɪn/
▶noun Medicine a broad-spectrum antibiotic of the tetracycline group, which has a long half-life in the body.
'doxycycline' also found in these Oxford entries:

