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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 ?
Standing Pat The Dixie Ticklers If you have been around at the last few Birmingham International Jazz & Blues Festivals, you might have come across some jazz nearly a century old being played not, as you might expect, by a bunch of old beards in straw boaters, but by a group of stylish chaps-abouttown who trained at London's finest jazz colleges.
We certainly can play a role," he said, adding "We're open to respond to our members' request but we've not received any, and so for now, we are standing pat."
But not all insurance companies are comfortable standing pat. When it comes to IT, in fact, nearly half of all insurers plan to increase their budgets.
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.