from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Computer Science An application that has limited features, requires limited memory resources, and is usually portable between operating systems.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a small program module that runs under the control of a larger application, typically a web browser
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a Java application; an application program that uses the client's web browser to provide a user interface
appl(ication) + -et.(American Heritage® Dictionary of the English Language, Fourth Edition)
app + -let, but perhaps also influenced by Apple (the term originated in AppleScript). (Wiktionary)