Last Updated：2025/11/21

The weighted average of the atomic masses of the naturally occurring isotopes of an element.

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average atomic mass

Source Word

average atomic mass

countable uncountable

The weighted average of the atomic masses of the naturally occurring isotopes of an element.

Japanese Meaning

元素の自然に存在する同位体の原子質量の加重平均

When calculating the average atomic mass of chlorine, be sure to account for the natural abundance of each isotope.

元素の天然に存在する同位体の原子質量の加重平均を計算するときは、各同位体の存在比を必ず考慮してください。

Sense（1）

The weighted average of the atomic masses of the naturally occurring isotopes of an element.

average atomic masses

（ plural ）