1. the property of a more than adequate quantity or supply

- an age of abundance

Similar word(s): copiousness, teemingness

Definition categories: attribute, quantity

2. (physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present

Definition categories: link, ratio

3. (chemistry) the ratio of the total mass of an element in the earth's crust to the total mass of the earth's crust; expressed as a percentage or in parts per million

Definition categories: link, ratio