Gay-Lus·sac 
(gā′lə-săk, -lü-säk), Joseph Louis 1778-1850.
(gā′lə-săk, -lü-säk), Joseph Louis 1778-1850. French chemist and physicist who isolated boron (1809) and formulated a law that explains the behavior of a gas under constant pressure.
- Pennsylvania
- Pennsylvania Dutch
- Pennsylvanian
- penny
- penny
- penny ante
- pennycress
- penny loafer
- penny pincher
- penny pinching
- penny-pinching
- pennyroyal
- pennyweight
- pennywhistle
- penny whistle
- penny-wise
- pennywise
- pennywort
- pennyworth
- Penobscot
- Penobscot River
- penological
- penologically
- penologist
- penology