# Unit

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## unit

**1.**a mechanical part or integrated assembly of parts that performs a subsidiary function

**2.**a complete system, apparatus, or establishment that performs a specific function

**3.**the amount of a drug, vaccine, etc., needed to produce a particular effect

**4.**a standard measure used in calculating alcohol intake and its effect

**5.**

*Maths*

**a.**the first position in a place-value counting system, representing a single-digit number

**b.**having a value defined as one for the system

**6.**

*Maths*

*logic*a set having a single member

**7.**

*NZ*a self-propelled railcar

**www.psigate.ac.uk/newsite/reference/units.html**

**www.ex.ac.uk/cimt/dictunit/dictunit.htm**

**www.unc.edu/~rowlett/units/index.html**

## Unit

in technology, a consolidated unified (normalized) assembly of a machine or complex of machines that possesses complete interchangeability and independently accomplishes isolated functions. A unit is characterized by electric motors, reducers, pumps and so forth. Sometimes the term “unit” refers to a combination of two or more machines.

## Unit

In the theory of algebraic numbers and in the theory of algebraic functions, a divisor of unity is called a unit, that is, *a* is a unit if there exists an element *b* such that *ab* = 1.

## unit

[′yü·nət] (engineering)

An assembly or device capable of independent operation, such as a radio receiver, cathode-ray oscilloscope, or computer subassembly that performs some inclusive operation or function.

(mathematics)

An element of a ring with identity that has both a left inverse and a right inverse.

(ordnance)

Any military element whose structure is prescribed by competent authority, such as a table of organization and equipment; specifically, part of an organization.

A standard of basic quantity into which an item of supply is divided, issued, or used.

(physics)

A quantity adopted as a standard of measurement.