domains

Noun

domain (plural domains)

1. A geographic area owned or controlled by a single person or organization.
   • The king ruled his domain harshly.

   Synonyms:

   demesne

2. A field or sphere of activity, influence or expertise.
   • Dealing with complaints isn't really my domain: get in touch with customer services.
3. A group of related items, topics, or subjects.
   • Some of the most beautiful and thus appealing physical theories, including quantum electrodynamics and quantum gravity, have been dogged for decades by infinities that erupt when theorists try to prod their calculations into new domains. Getting rid of these nagging infinities has probably occupied...2012 January, Michael Riordan, “Tackling Infinity”, in American Scientist, volume 100, number 1, archived from the original on 30 Apr 2013, page 86
4. The set of input (argument) values for which a function is defined.
   1. (broadly) The set A; The subset of A consisting of elements a of A such that there exists an element b in B with (a,b) in R.
5. A ring with no zero divisors; that is, in which no product of nonzero elements is zero.

See all 17 meanings of domain