applet

[ap-lit] /ˈæp lɪt/
noun, Computers, Informal.
1.
a small application program that can be called up for use while working in another application.
Origin
1990-95; app(lication) + -let
British Dictionary definitions for applets

applet

/ˈæplɪt/
noun
1.
(computing) a computer program that runs within a page on the Internet
Word Origin
C20: from app(lication program) + -let
Word Origin and History for applets

applet

n.

by 1995, a diminutive formation from application.

applets in Science
applet
  (āp'lĭt)   
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.