|Origin:||domaine, from Latin dominus 'lord'|
do‧main [countable] formal
an area of activity, interest, or knowledge, especially one that a particular person, organization etc deals with ➔ public domain
outside/within the domain of something/somebody
This problem is outside the domain of medical science.
Looking after the house was viewed as a woman's domain.
an area of land owned and controlled by one person or government, especially in the past:
the extent of the royal domain
the set of possible quantities by which something can vary in mathematics
a domain name