http

As a noun connotation

is a meaning of a word or phrase that is suggested or implied, as opposed to a denotation, or literal meaning a characteristic of words or phrases, or of the contexts that words and phrases are used in.

As a noun blastoderm

is the germination point in an ovum from whence the embryo develops.

As an initialism HTTP is

hypertext Transfer Protocol, the protocol used most commonly to transfer web pages and accompanying data over the Internet.

As an acronym sdch is

shared dictionary compression over http, a compression technique for the web.

As a noun pushlet is

(internet|rare) a push mechanism in which the web server takes advantage of persistent http connections and leaves the response unterminated so that it can continue to send information.