The process of password-protecting data with the use of a one-time hash called an encryption key. You can establish a network tunnel to pass encrypted data over a network, and you can encrypt a network session using SSH and SSL. In the file system, encrypted data can be stored in encrypted disk images, in FileVault-protected home folders, and with encrypted virtual memory.
Exposé
A Mac OS X feature that automatically tiles open windows.
extension
Software that extends the functionality of an operating system.
