Meaning of mass noun

mass' noun"

Pronunciation: [key]
  1. a noun, as water, 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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