domain

noun

Saydoh-MAYN/doʊˈmeɪn/UK/dəʊˈmeɪn/AUSduh-MAYN/dəʉˈmæɪn/

17 meanings of domain

1
nouncountable
An area of knowledge, work, or skill that a person deals with.
Like having your own corner of a workshop where you know every tool.
Marketing is not really my domain, so I asked a coworker for help.
Each manager handles problems within their own domain.
Similarfield, sphere, area, province, territory
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2
nouncountable
An area of land that one person, family, or group owns and controls.
Like a fenced yard that belongs to just one family.
The castle and all the land around it formed the lord's domain.
Hunters were not allowed to enter the king's private domain.
Similarrealm, territory, dominion, kingdom, estate
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3
nouncountable
A name that identifies a website or group of computers on the internet.
Like a street address, but for a website.
They registered a new domain for the company website.
You can buy a domain for a few dollars a year.
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4
nouncountable
A group of things, topics, or subjects that are connected to each other.
Like a folder that holds files about one single topic.
All the questions came from the same domain of history.
The test covers several domains, like reading and math.
Similarcategory, area, group
5
nouncountable
The full set of input values a function is allowed to work with.
Like the list of ingredients a recipe is allowed to use.
The domain of this function is all numbers except zero.
You can't divide by zero, so we leave zero out of the domain.
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6
nouncountable
The biggest group scientists use to sort living things, ranking above kingdom.
Like the biggest drawer that holds many smaller drawers of living things.
Bacteria make up one domain of life.
Scientists place all living things into three domains.
Similarsuperkingdom
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7
nouncountable
A folded part of a protein that carries out its own special job.
Like one room in a house that has its own use.
This protein has a domain that binds to DNA.
Each domain folds into its own shape.
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8
nouncountable
A tiny area inside a magnetic material where the magnetism all points one way.
Like a crowd of tiny compass needles all pointing the same way.
Heating the iron scrambled the direction of each domain.
In an unmagnetized bar, the domains point in random directions.
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9
nouncountable
A group of internet names made up of one main name and all the names under it.
Like a family that includes the parents and all their children together.
The whole company domain includes dozens of smaller addresses.
Their domain covers the main site and every subsite beneath it.
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10
nouncountable
The group of computers that share one internet name.
Like all the houses on one street sharing the same street name.
All the computers in our company domain are kept up to date.
Hackers tried to break into the whole domain at once.
Similarnetwork
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11
nouncountable
A set of stored facts about a group of computers and the network they use.
Like a filing cabinet holding every record about one group of computers.
She opened the domain to check the saved network settings.
Our domain keeps records of every computer and its address.
12
nouncountable
In math, a connected group of points that has no edge, like the numbers between 0 and 1.
Like the inside of a balloon: every spot connects to every other, but the skin itself is not included.
The teacher drew a domain on the board with no boundary line.
Every point in this domain can be linked to another without leaving it.
Similarregion
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13
nouncountable
In math, a system where multiplying two non-zero values never gives zero.
Like a rule saying that if you multiply two things and get nothing, one of them must have been nothing already.
The students learned why the whole numbers form a domain.
In a domain, two non-zero numbers multiplied together never equal zero.
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14
nouncountable
Information that describes a piece of data: its type, name, and how it is used.
Like a label on a box that says what kind of thing belongs inside and how to use it.
The analyst checked the domain to see what kind of data the field held.
Each column in the table has a domain that names its data type.
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15
nouncountable
An area of rock where the minerals are spread out in much the same way throughout.
Like a part of a field where the same crop grows evenly all over.
Miners found gold spread evenly across the whole domain.
The geologist marked each domain where the ore looked the same.
Similarzone, region, province
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16
nouncountable
A tiny magnetic spot used to store one bit of data in an old type of computer memory.
Like a tiny bubble that is either there or not there, standing for a one or a zero.
Each domain in the chip held a single bit of information.
The reader detected whether a domain was present or missing.
Similarbubble
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17
nouncountable
In math, all the input values that a function is allowed to take.
Like the list of buttons a machine will accept: press anything off the list and nothing happens.
The domain of this function is all numbers greater than zero.
She wrote down the domain before drawing the graph.
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Practice

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Origin

It comes from Latin dominium, meaning "property" or "right of ownership," from dominus, meaning "master" or "owner." It reached English through Middle English and Old French.