a·bun·dance

[uhbuhn-duhns]

noun

1.  An extremely plentiful or oversufficient quantity or supply: an abundance of grain.
2.  Overflowing fullness: abundance of the heart.
3.  Affluence; wealth: the enjoyment of abundance.
4.  Physics, Chemistry . the number of atoms of one isotope of an element divided by the total number of atoms in a mixture of the isotopes.