1. (

• abundance ,
• copiousness ,
• teemingness

) the property of a more than adequate quantity or supply; "an age of abundance" ;

2. (

• abundance ,

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

3. (

• abundance

) (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 ;