Sorry, your browser does not support either the latest HTML5 standard for video or the video format mp4. Firefox doesn't play mp4 videos. Or, download the most-compatible browser Google Chrome at http://www.google.com/chrome .
Definition: The branch of science and technology concerned with the design, building, and use of engines, machines, and structures.
Written ASL digit for "engineering" contributed by Adrean Clark in the ASLwrite community, 2017.