noun Computers, Informal.
  1. a small application program that can be called up for use while working in another application.

Origin of applet

1990–95; app(lication) + -let Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for applet


  1. computing a computer program that runs within a page on the Internet

Word Origin for applet

C20: from app (lication program) + -let
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for applet

by 1995, a diminutive formation from application.

Online Etymology Dictionary, © 2010 Douglas Harper

applet in Science


  1. A small computer program that has limited features, requires limited memory resources, and is designed to be downloaded from the Internet to run on a webpage. An applet cannot read or write data on the user's machine.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.