What's the plural form of water vapor pressure? Here's the word you're looking for.
Answer
The noun water vapor pressure can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be water vapor pressure.
However, in more specific contexts, the plural form can also be water vapor pressures e.g. in reference to various types of water vapor pressures
or a collection of water vapor pressures.
