a noun, as sunshine,electricity, or happiness, that typically refers to an indefinitely divisible substance or an abstract notion, and that in English cannot be used, in such a sense, with the indefinite article or in the plural.
- Also called non·count noun [non-kount-noun], /nɒnˈkaʊnt ˈnaʊn/, un·count·a·ble noun [uhn-koun-tuh-buhl noun], /ʌnˈkaʊn tə bəl ˈnaʊn/, un·count noun [uhn-kount-noun] /ʌnˈkaʊnt ˈnaʊn/ .
- Compare count noun.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
British Dictionary definitions for mass noun
a noun that refers to an extended substance rather than to each of a set of isolable objects, as, for example, water as opposed to lake. In English when used indefinitely they are characteristically preceded by some rather than a or an; they do not have normal plural forms: Compare count noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012