application extension

(1) Microsoft's name for an auxiliary, executable file, which is normally a DLL. See DLL.

(2) A supplementary routine that adds capabilities to an application.

(3) A supplementary format that adds options in a data set. See data set.

Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.