hydrogen
hahyd ruh juhn
- n a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
- It may be years before you can buy a Chevy powered by hydrogen fuel cells.
- How will man fill his future need for energy when the world begins to run out of readily accessible supplies of gas and oil? One answer now being investigated is hydrogen.
- Iceland is making its dream of a hydrogen economy come true.