domain meaning

Noun: domain  dow'meyn [N. Amer], du'meyn [Brit]

1. A particular environment or walk of life
   - sphere, area, orbit, field, arena 
2. Territory over which rule or control is exercised
   "his domain extended into Europe"
   - demesne, land 
3. (mathematics) the set of values of the independent variable for which a function is defined
   - domain of a function 
4. People in general; especially a distinctive group of people with some shared interest
   - world 
5. The content of a particular field of knowledge
   - knowledge domain, knowledge base

Derived forms: domains

Type of: class, cognitive content, content, environment, mental object, region, set, social class, socio-economic class, stratum

Part of: country, land, state

Encyclopedia: Domain Domain, Manitoba

[Business]
AmE / noun [C]

PUBLIC DOMAIN, TOP-LEVEL DOMAIN

1 (IT )

a set of Internet addresses that end with the same group of letters:

.com is the most popular domain on the Internet, with over 21 million names.

You will need to register a domain name (= an individual Internet address).

2

an area of knowledge or activity, especially one that sb is responsible for:

a collection of documents relating to the domain of banking

Sometimes things outside your domain go wrong.

With prices starting at €30 000, a new Jaguar car may no longer be the exclusive domain of company directors .

[Electronics]
1. A region of unidirectional magnetization in a magnetic material.
2. A region of unidirectional polarization in a ferroelectric material.
3. A region in which a variable is confined.

[Law]
It signifies sometimes, dominion, territory governed -sometimes, possession, estate - and sometimes, land about the mansion house of a lord. By domain is also understood the right to dispose at our pleasure of what belongs to us.

A distinction has been made between property and domain. The former is said to be that quality which is conceived to be in the thing itself, considered as belonging to such or such person, exclusively of all others. By the latter is understood that right which the owner has of disposing of the thing. Hence domain and property are said to be correlative terms; the one is the active right to dispose, the other a passive quality which follows the thing and places it at the disposition of the owner.
   

[Medicine]
n : any of the three-dimensional subunits of a protein that together make up its tertiary structure, that are formed by folding its linear peptide chain, and that are variously considered to be the basic units of protein structure, function, and evolution ‹immunoglobulin light chains have two domains and heavy chains have four or five domains, depending on class —Jour. Amer. Med. Assoc.›

[Computer]
1. <networking> A group of computers whose fully qualified domain names (FQDN) share a common suffix, the "domain name".

The Domain Name System maps hostnames to Internet address using a hierarchical namespace where each level in the hierarchy contributes one component to the FQDN. For example, the computer foldoc.doc.ic.ac.uk is in the doc.ic.ac.uk domain, which is in the ic.ac.uk domain, which is in the ac.uk domain, which is in the uk top-level domain.

A domain name can contain up to 67 characters including the dots that separate components. These can be letters, numbers and hyphens.

2. An administrative domain is something to do with routing.

3. Distributed Operating Multi Access Interactive Network.

4. <mathematics> In the theory of functions, the set of argument values for which a function is defined.

See domain theory.

5. <programming> A specific phase of the software life cycle in which a developer works. Domains define developers' and users' areas of responsibility and the scope of possible relationships between products.

6. The subject or market in which a piece of software is designed to work.

Examples

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1. the particle is displaced in a flow domain.
2. the interval oc is known as the domain of dependence.
3. we enter the domain of the pine trees.
4. d is called the domain and its elements are places.
5. geography is not within my domain.