What's the plural form of particulate matter? Here's the word you're looking for.
Answer
The noun particulate matter can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be particulate matter.
However, in more specific contexts, the plural form can also be particulate matters e.g. in reference to various types of particulate matters
or a collection of particulate matters.
Examples
First alveolar duct bifurcations have been shown to be a primary site of deposition for particulate matter and gaseous pollutants.
Our results suggest a possible causal link between airborne particulate matter from traffic and chronic respiratory symptoms.
As snow falls, it picks up whatever chemicals and particulate matter are in the atmosphere.
Conway said there is good evidence that fine particulate matter from Asia is landing in British Columbia.
Figure 2 shows the emissions of particulate matter from fuelwood use in Bergen, divided by urban district.
Each of these options may change the mass that would be counted as condensable particulate matter.
