Subdomain

(sub d -m n ) (n.) Also called a child domain, a domain that is part of a larger domain name in DNS hierarchy. DNS hierarchy consists of the root-level domain at the top, underneath which are the top-level domains, followed by second-level domains and finally subdomains. For example, in the domain name webopedia.internet.com, “webopedia” is a subdomain of the larger second-level domain “internet.com.”

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

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