(geography) Abbreviation of heights., as found in placenames

plural of ht.

(chemistry) A brown synthetic coal tar diazo dye.

(biochemistry) Initialism of 5-hydroxytryptamine.

Initialism of Hypertext Markup Language.

(Internet, networking) Initialism of Hypertext Transfer Protocol (the protocol used most commonly to transfer Web pages and accompanying data over the Internet)

(Internet) A packet of information sent by a server to a World Wide Web browser and then returned by the browser each time it accesses that server, used to maintain state between otherwise stateless HTTP transactions, for example, to identify the user.

(Internet) Initialism of Hypertext Transfer Protocol Secure ((HTTP Secure), an encrypted form of information transfer on the Internet.)

(Christianity) Initialism of hard to receive.

(medicine) Initialism of hard tissue replacement. / (technology) Initialism of high temperature reactor.