pyrazine

American  

[peer-uh-zeen] / ˈpɪər əˌzin /

noun

pyrazines plural

1. Chemistry. a heteroaromatic organic compound with the chemical formula C₄H₄N₂, which has its nitrogen atoms at the first and fourth positions in the ring.

---

pyrazine Scientific  

/ pĭr′ə-zēn′ /

1. Any of a group of organic compounds having a six-member ring in which the first and fourth atoms are nitrogen and the rest are carbon. Pyrazines are components of many important compounds, including pteridines, some vitamins and antibiotics, and numerous dyes called phenazines.

---

Other Word Forms

Noun Inflected Forms

• pyrazines
  plural

Example Sentences

See Examples For:

pyrazine pyrazines

Pyridine gives origin to: pyridazine or ortho-diazine, pyrimidine or meta-diazine, pyrazine or para-diazine, osotriazine, unsymmetrical triazine, symmetrical triazine, osotetrazone and tetrazine.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various

Yet there is something a bit dreary about Kramer’s call for such unvarnished expressions of judgment—something as inaccessible, in its way, as references to thiols or pyrazines.

From The New Yorker ● Jul. 29, 2015