##### Wiktionary

**physical quantity**

n. A physical property that can be measured or calculated from other physical property and expressed as the product of a numerical value and a physical unit.

##### Wikipedia

**Physical quantity**

A **physical quantity** is a physical property of a phenomenon, body, or substance, that can be quantified by measurement. A physical quantity can be expressed as the combination of a magnitude expressed by a number – usually a real number – and a unit; for example, (the mass of the neutron), or (the speed of light). Physical quantities are measured as 'nu' where n is the magnitude and u is the unit. For example: A boy measured the length of a room as 3 m. Here 3 is the magnitude and m (metre) is the unit. 3 m can also be written as 300 cm. This shows that n1u1 =n2u2. Almost all matters have quantity.

#### Usage examples of "physical quantity".

Buzzo believed he'd found a way of tackling the calculation of any real __physical quantity__ which made the effective contribution of all the universes of isolated points equal to zero.

Five dimensional energies which are required for teleportation are vectors-a __physical quantity__ with both magnitude and direction.