applet
noun [ C ] computing specialized uk/ˈæp.lət/ us/ˈæp.lət/
（计算机）小应用程序
a small computer program, often used on websites, that performs one particular task and works from within a larger program
The user confirms their order and downloads an applet which asks them for their personal and payment details. 用户对其订购进行确认，然后下载一个小应用程序，它便会询问用户的详细个人信息及具体付款事宜。