|Gay-Lussac (ˈɡeɪˈluːsæk, French ɡɛlysak)|
|Joseph Louis (ʒozɛf lwi). 1778--1850, French physicist and chemist: discovered the law named after him (1808), investigated the effects of terrestrial magnetism, isolated boron and cyanogen, and discovered methods of manufacturing sulphuric and oxalic acids|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a gadget; dingus; thingumbob.|
|Gay-Lussac (gā'lə-sāk') Pronunciation Key
French chemist and physicist who in 1808 developed a law governing the ratio of volumes of gases participating in chemical reactions. In that same year, with Louis Jacques Thénard, he discovered the element boron.