ac·et·al·de·hyde 
(ăs′ĭ-tăldə-hīd′)
(ăs′ĭ-tăldə-hīd′)n.
A colorless, flammable liquid, C2H4O, used to manufacture acetic acid, perfumes, and drugs.
- lightheartedness
- light heavyweight
- "Light Horse Harry."
- lighthouse
- lighting
- light into
- lightly
- light meter
- light mill
- light-minded
- light-mindedly
- light-mindedness
- lightness
- lightness
- lightning
- lightning arrester
- lightning bug
- lightning chess
- lightning rod
- light opera
- light out
- light pen
- light plane
- lightplane
- light pollution