Definition:Elementary Unit

Definition

Every substance is composed of indivisible particles of that substance.

These particles are referred to as the elementary units of that substance.

Examples

Elementary units may be:

atoms (of a specified element)

molecules (of a specified substance)

ions (of a specified type)

electrons

photons

and so on.

Also see

• Results about elementary units can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): mole
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): mole