Webster's 1913 Dictionary
PIPERAZINE; PIPERAZIN
Pi *per "a *zine, n. Also -zin. [Piperidine + azote + -ine.] (Chem. )
Defn: A crystalline substance, (C2H4NH )2, formed by action of ammonia on ethylene bromide, by reduction of pyrazine, etc. It is a strong base, and is used as a remedy for gout.
New American Oxford Dictionary
piperazine
pi per a zine |piˈperəˌzēn, pipˈərə -paɪˈpɛrəˌzin | ▶noun Chemistry a synthetic crystalline compound with basic properties, sometimes used as an anthelmintic and insecticide. [A heterocyclic compound; chem. formula: C 4 H 10 N 2. ] ORIGIN late 19th cent.: from piperidine + azine .
Oxford Dictionary
piperazine
piperazine |pɪˈpɛrəziːn, pʌɪ -| ▶noun [ mass noun ] Chemistry a synthetic crystalline compound with basic properties, sometimes used as an anthelmintic and insecticide. ●A heterocyclic compound; chem. formula: C 4 H 10 N 2. ORIGIN late 19th cent.: from piperidine + azine .
The Wordsmith Dictionary