|1.||[ noun ] the property of a more than adequate quantity or supply|
"an age of abundance"
|Related terms:||scarcity quantity plenty wealth profusion amplitude overabundance luxuriance abound|
|2.||[ noun ] (physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present|
|Related terms:||ratio physics|
|3.||[ noun ] (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|
|Related terms:||ratio chemistry|