piperacillin

[ pahy-per-uh-sil-in ]
/ paɪˌpɛr əˈsɪl ɪn /

noun Pharmacology.

a broad-spectrum semisynthetic penicillin, C23H26N5NaO7, used against certain susceptible Gram-positive and Gram-negative bacteria and certain anaerobes, especially P. aeruginosa.

Origin of piperacillin

pipera(zinyl), a component of its chemical name (see piperazine, -yl) + -cillin, as in penicillin