isp

noun

1. (abbreviation, alt-of, initialism)Initialism of interstellar polarization.
2. (Internet, abbreviation, alt-of, initialism)Initialism of Internet service provider (a company that provides Internet access for a fee).

   “Upon my glorious ISP homepage is a wonderful piece of wisdumb […]”

   “Virgin Media, one of the UK's largest ISPs, has agreed to forward British music industry nastygrams to subscribers suspected of illegal file-swapping. […] But left undiscussed is the core question of why Virgin is whoring itself out like this; the law doesn't require it, and passing on letters from the British Phonographic Industry (BPI) won't make an ISP more dosh. Or will it?”

   “Status code 451 can be used by a website such as Facebook or Twitter, or by network intermediaries like a firewall or ISP. […] Take, for example, the U.K. government’s decision in 2012 to force ISPs to block torrent site The Pirate Bay. Instead of throwing up a 403 Forbidden code, ISPs could instead return 451 to make it clear why their customers can’t see specific content.”

3. (abbreviation, alt-of, initialism)Initialism of interface segregation principle, one of the five SOLID principles of programming.
4. Iₛₚ, the specific impulse of a rocket engine.
5. (abbreviation, alt-of)Abbreviation of ichnospecies.

symbol

1. (abbreviation, alt-of)Abbreviation of specific impulse.