Question

what do you mean by unit

Answer 1

• an individual thing or person regarded as single and complete but which can also form an individual component of a larger or more complex whole
• a device that has a specified function, especially one forming part of a complex mechanism.

hope it will help you

Answer 2

hey

In the context of a ring or a semigroup with an identity element, an element which has a multiplicative inverse in the ring or the semigroup. For example in the ring of all n×n matrices over a field, e.g. R or C, every matrix with a nonzero determinant is a unit.

But alternatively in mathematics a unit also means an identity element in an algebraic structure.

In physics, a unit is the standard way to express quantitative measurement.