[ˈfɒzdʒiːn], (Noun)

Definitions:
- a colourless poisonous gas made by the reaction of chlorine and carbon dioxide. It was used as a poison gas, notably in the First World War


Phrases:

Origin:
early 19th century: from Greek phōs ‘light’ + -gen, with reference to its original production by the action of sunlight on chlorine and carbon monoxide