Definitions for "Browser plug-in"
Software that you attach to a browser to enable it to display specific data formats.
Browser plug-in is a piece of software (ActiveX component in Microsoft Windows) that is installed in a web browser and allows special types of media and/or interactivity to be embedded into web pages. Browser plug-ins are potentially unsafe programs because they execute their code on the client computer. For this reason, browsers disallow installation of new plug-ins by default (and the users are usually reluctant to allow it either). Examples of popular browser plug-ins are Macromedia Flash player (almost all computers), Macromedia Authorware player (less popular) etc.
an application that can be installed within a user's web browser