Find the word definition

Wiktionary
butyllithium

n. (context organic compound English) Any of three isomeric organolithium reagents used in chemical synthesis.

Wikipedia
Butyllithium

Butyllithium may refer to one of three isomeric organolithium reagents used in chemical synthesis:

  • n-Butyllithium, abbreviated BuLi or BuLi
  • sec-Butyllithium, abbreviated sec-BuLi or BuLi
  • tert-Butyllithium, abbreviated tert-BuLi or BuLi