Top Definition
A measure of magnitude of coolness of an object, person, or situation. Measured in units of coolness.

See also cool, coolness
The coolnessness of a garage of Ferraris cannot be underestimated
by BertieB February 11, 2005
1 more definition
an expression. meaning awsome or really neat
Coolnessness! I didn't know they were dating.
by Arielle Levesque September 29, 2007

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