SULPHUR

[esp. US] sulfur [noun] [U] - a pale yellow element which exists in various physical formsSulphur, which burns with a blue flame and a pungent smell, is used in making matches and gunpowder.Sulphur dioxide is a colourless gas which has a strong unpleasant smell and dissolves in water. It is used in various industrial processes and for preserving food, and it is also a serious air pollutant.The European Union is reviewing controls for sulphur dioxide emissions from coal-fired power stations.The sulphur-crested cockatoo is a large white parrot from Australia which is often kept as a pet in other countries.