Note:For some items, a link on the word leads to a page with more details.

A (Address)
A DNS record type that specifies an IP address of a web server.

Alexa ranking
Assessement of the traffic of any domain or website.

Administrative Contact
The registrant contact that can initiate transfers of ownership, domain transfers, etc. A full address is provided but for generic tld, only the email address is used for such operations. Other contacts are the billing and technical contacts.

(Domain) After-Market
Generally refers to the marketplaces where domains are sold and bought, althougt domains can be sold privately.

(Domain) Appraisal
Assessing a monetary value for a domain name, either for sale, purchase or accounting purposes.

Back Order
To place a registration order for a domain name that is currently registered by another party.

ccTLD (Country Code Top Level Domains)
Domain names assigned to particular countries, such as .de, .co.uk, .fr, .es, etc.

CNAME (Alias)
A DNS record type that specifies an alias for another sub-domain.

Cybersquatting
Deliberate, bad-faith and abusive registration of Internet domain names in violation of the rights of trademark owners.

Direct Navigation
The act of navigating to a website directly through the website address bar.

Domain hacks
Unconventional domain names that use subdomains or tld to create remarkable addresses.

Domain kiting
Strategy used by name catchers which consists of registering domains, dropping them the fifth day and registered them again immediately after.

Domain tasting
Taking advantage of the 5-day trial period allowed by ICANN to try a domain.

DNS (Domain Name System)
Process that converts Internet host names (how humans address servers) to IP addresses (how computers address servers) .

Dropping Domain
A domain name that is just about to become available again.

Escrow services
A safe way of transferring ownership of a domain name from one party to another.

Free push
Free transfer of a domain name from an account to another with the same registrar.

gTLD (Generic Top Level Domain)
Top level domains sanctioned by ICANN, such as .com, .net, .org, etc.

ICANN (Internet Corporation for Assigned Names and Numbers)
The non-profit corporation that was formed to assume responsibility for the management of top level domain names and root servers, allocation of IP addresses and assignment of Internet protocol parameters. These functions had formerly been handled by IANA and the InterNIC.

Internationalized Domain Names (IDNs - Multi-Lingual Domain)
A domain name that contains characters not in the following list: a-z, 0-9 or "-", such as é,è, à, etc.

Pagerank
Score between 0 and 10 calculated by Google for any page on the web.

Parking, Domain
The act of attaching a domain name to a web server without building a web site.

Propagation
The process whereby changes to the DNS records for a domain name at the authoritative name server find their way to the root servers and then to all the other name servers on the Internet.

Registrar Lock
Prevents a domain name from being transferred to a different registrar.

UDRP
Set of rules which help decide who ought to own a particular domain name in the case of a dispute over ownership.

WHOIS
The contact information associated with a domain name. Note: This is maintained by the registrar that registered the name, not the central registry.

WIPO (World Intellectual Property Organization)
United Nations sponsored organization often used as an jurisdiction to resolve domain name disputes.