This is exactly what the Wikr bookmarklet does.
Follow the above link, and drag the Wikr bookmarklet provided there to your browser's toolbar. This creates a bookmark called Wikr which is actually the activation button for a useful javascript program. The next time you want to look something up while browsing any given web-page, highlight the term and then click on your Wikr bookmark. See also the "More info about" bookmarklet.
This is exactly what the Wikr bookmarklet does.
Follow the above link, and drag the Wikr bookmarklet provided there to your browser's toolbar. This creates a bookmark called Wikr which is actually the activation button for a useful javascript program. The next time you want to look something up while browsing any given web-page, highlight the term and then click on your Wikr bookmark. See also the "More info about" bookmarklet.