# 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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## 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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
With this completed transaction, HDT expands its offering in mobile enclosures, mobile aircraft ground equipment, and specialised expeditionary environmental control units.
Other names for EADLs are environmental control systems and environmental control units.
A Force Provider kit provides tents, environmental control units, generators, kitchens, dining areas, MWR tents, beds, and a chapel, as well as laundry, latrine, and shower facilities.
Two service trailers (8.5 feet wide x 53 feet long x 13.5 feet high) house two multi-fuel generators, four environmental control units and a storage area.
Some practitioners confine patients to environmental control units for days or weeks or feed them special diets before making a diagnosis.
To solve this problem, disabled people have turned to environmental control units and emergency call systems costing more than \$3,000.
Aspen Systems manufactures and sells the ECU-ChillTM line of standardized environmental control units designed to prevent overheating of commercial electronic components when operated in sealed enclosures in harsh environmental conditions.
The items which caused the biggest problem with the JNN-Network were some standard Army inventory items, harvested from a gaining unit's Mobile Subscriber Equipment; the older Environmental Control Units and generators.
A full Harvest Falcon kit includes tents, hard-wall shelters, area lighting systems, basic water and electrical systems, latrines and showers, a kitchen facility, environmental control units, and other basic equipment.

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