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In the lumber industry, abbr. for pattern.


As applied to a specimen of neat cement paste, a sample about 3 in. (7.6 cm) in diameter and ½ in. (1.3 cm) in thickness at the center and tapering to a thin edge; applied on a flat glass plate to determine the setting time.


(Port Address Translation) The most common way network address translation is implemented (see NAT). Also called "NAT overloading," "network address port translation" (NAPT) and "NAT/PAT."

PAT assigns a different TCP port number to each client session with a server on the Internet. When responses come back from that server, the source port number becomes the destination port number and determines which user to route the packets to. It also validates that the incoming packets were indeed requested. See NAT traversal, UDP hole punching, private IP address, RSIP and proxy server.

By using a different port number for each user, the NAT device knows which client PC to route the incoming packets to. See TCP/IP port.
References in periodicals archive ?
But Rousseau says neither he nor the museum staff is standing pat as a search committee goes back to the drawing board in its quest for a new leader.
THIS year's You're A Star final is sure to be a cat fight as last man standing Pat Fitz was booted off the show last night.
As innovations such as teleunderwriting have demonstrated, standing pat, smack dab in latter decades of the last century, doesn't cut it.
Supermarket chains here are standing pat at their own peril.