Top Definition
A mewon is a subatomic kitty particle. it is a kitty that is the size of a subatomic particle. actual size may vary, just like full size kittys.
late at night you can hear the mewons in the universe in the atoms in your fingernails.

Houses typically have two mewons, though crazy cat physicists may have billions or more!
by mr. meowsers June 08, 2011
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