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(operating system)
To move a program from fast-access memory to a slow-access memory ("swap out"), or vice versa ("swap in"). The term often refers specifically to the use of a hard disk (or a swap file) as virtual memory or "swap space".

When a program is to be executed, possibly as determined by a scheduler, it is swapped into core for processing; when it can no longer continue executing for some reason, or the scheduler decides its time slice has expired, it is swapped out again.

This contrasts with "paging" systems in which only parts of a program's memory is transfered.

SWAP (severe weather avoidance plan)

An approved plan to minimize the effect of severe adverse weather to traffic flows in affected terminal and/or ARTCC (air traffic control center) areas. This plan is put into operation when flight through an airspace is either not possible or is difficult. Such a plan should cause minimum disruption.
References in periodicals archive ?
In this article, we suggest that regulatory changes help explain negative swap spreads.
SWAP Cadbury's drinking chocolate - 72.5g of sugar per 100g or 18 teaspoons FOR Options instant Belgian chocolate drink - 43g of sugar per 100g or 10 teaspoons
He also stressed that there is a possibility of increasing oil swap capacity between Iran and Central Asia in the near future.
The Canadian dollar-Korean won swap follows the hard-earned extension with the Chinese yuan amid a diplomatic row between Seoul and Beijing.
(NIOC) announced it has tasked one of its subsidiaries to resume oil swaps across the Caspian.
The NBU shall perform swap transactions through forward auctions and upon request from banks based on their applications.
The CFTC defines a "swap dealer" based on the swap-dealing activities in which it engages.
He said that the crude oil swap capacity of IOTC could soar to 500,000 b/d in the short term.
In the swap transaction, we received from our sister company, Gansu Yasheng Agro-Industrial and Commerce Co.
When she got home that night, she created a Facebook page (facebook.com/seacoastfoodswap) for the new venture, calling it the Seacoast Food Swap.
The Sugar Swaps campaign suggests ways that you can help your family eat less sugar by making simple changes in diet at key occasions in the day.