The story
From (imid)az(o)l(idine) + -o- + -cillin (“6-aminopenicillanic acid derivative”).
Etymology from Wiktionary, CC BY-SA 4.0.
azlocillin
Today it means: An acylampicillin antibiotic with an extended spectrum of activity and greater in vitro potency than the carboxy penicillins. Full definition →