domain
do
doʊ
dow
main
ˈmeɪn
mein
British pronunciation
/dəʊˈmeɪn/

Definition & Meaning of "domain"in English

Domain
01

a territory or area under the control or authority of a ruler or government

example
Examples
The castle stood at the heart of the king 's domain.
That island once formed part of the empire 's vast domain.
02

the last characters of a website's address such as '.com', '.org', etc.

example
Examples
The website 's domain is crucial for establishing its online identity and presence.
He registered a new domain for his business website, choosing '.net' to reflect its networking services.
03

the highest rank in the biological classification system, above the kingdom, grouping organisms by molecular and structural traits

example
Examples
Bacteria and Archaea are two of the three recognized domains of life.
The domain Eukarya includes all organisms with complex cells.
04

a particular area of activity, influence, or experience

example
Examples
Politics was never her domain.
Mathematics remains the domain of logical thinkers.
05

the scope or range of knowledge, interest, or expertise in a particular field

example
Examples
Quantum mechanics lies outside my domain of study.
The report covers several domains of social research.
06

a group of people united by shared interests or characteristics

example
Examples
The artistic domain welcomed the new movement with enthusiasm.
The academic domain often resists rapid change.
07

the set of all possible input values for which a given function is defined

example
Examples
To find the domain of a rational function, exclude any values that make the denominator zero.
Understanding the domain of a function is crucial for graphing it accurately.
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