vapor

The root vapor comes straight from Latin vapor, meaning 'steam, mist, exhalation' — the visible breath that rises off hot water, warm soil, or a boiling pot. Unlike many Latin roots, it barely changed shape on its journey into English: vapor (American spelling) and vapour (British spelling) are the same word.

Most of the family is built by describing what happens to that mist:

- vapor / vapour: the mist itself, the gaseous form hanging in the air
- -ize (to make) gives vaporize: to turn something into vapor
- -ation (the process) gives vaporization: the act of turning into gas
- ex- / e- (out) gives evaporate: to send moisture out into the air as vapor — water 'breathing out' of a wet surface until it is dry
- evaporation: the natural process behind drying laundry, sweating, and clouds forming

Notice the one prefix worth flagging: in evaporate, the e- is the 'out' prefix (the same one in eject, emit, erode), and the v doubles visually only because Latin wrote it as ē-vapōrāre. So evaporate literally means 'to vapor outward.'

This is a rare root with almost no metaphorical drift. When a magician makes a coin 'vanish into thin air,' English borrows the same physical picture — something solid turning into invisible gas — but the words stay close to their literal, scientific meaning. If you can picture steam leaving a kettle, you understand every word in this family.