|Thénard (tā-när') Pronunciation Key
French chemist who is best known for his 1818 discovery of hydrogen peroxide. Earlier, working with Joseph Gay-Lussac, Thénard also discovered boron (1808).
|a chattering or flighty, light-headed person.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|