POP

Contraction of "Repopulation", often used as a shortened term for the re-spawn of monsters.

Probability of Precipitation

Proof of Principle.

A protocol that defines an email server and a way to retrieve mail from it. Incoming messages are stored at a POP server until the user logs in and downloads the messages to their computer. The current version is POP3. While SMTP is used to transfer email messages from server to server, POP is used to collect mail with an email client from a server. Also Known As: POP3, Post Office Protocol.

Point of Presence. A remote location that provides network connectivity back to the core of the network for users within its service area. Service providers deploy POPs to give customers an entry point to their networks from their local loops.

Acronym for point of presence.