mass noun
noun /ˈmæs naʊn/
/ˈmæs naʊn/
(grammar)- an uncountable noun (= a noun that cannot be made plural or used with a or an, for example water, bread and information)
- a noun that is usually uncountable but can be made plural or used with a or an when you are talking about different types of something. For example, bread is used as a mass noun in the shop sells several different breads.