Dictionary.app opens but without selected word in a browser

In Firefox 111.0.1 or Safari 16.3:

dict://anodyne

Opens the dictionary app with the definition of anodyne displayed.

I recommend that since this is an older Automator service that you open it from your ~/Library/Services folder in Automator, review that content, and then resave it as a new Automator Quick Action under a different name. Then, if the shortcut that you used is not in use by something else now, assign it to the new Quick Action and try it again.

You may need to select the word in the browser and use its Services menu once before the short cut begins to work afterward.

If your service opens the dictionary app on the selected word in the browser, and does not work in Firefox, then under the Firefox Applications menu > Services menu, choose your service there. If it still does not work, then I recommend, as I did before, opening your Service in Automator, reviewing what data type is selected to open in what application, and then resave the service. I don't see a keyboard shortcut conflict with Firefox 111.0.1.

When you save an Automator workflow as a Service (now named Quick Action) it will be in your local Library's Service folder. If you gave it the unusual name of Automator-Firefox.app.workflow, you don't go exploring inside that bundle, you tell Automator to open it. You should be able to right-click on that Service name and choose Automator from the Open With sub-menu. In the future, save Quick Actions without the .app in the name.

Take a screen shot of that opened workflow (adjusting action window sizes as necessary to expose their content). Then using the image icon at the bottom of this editor, select that screen shot and post it here.

Highlight the work, Control (right) - click on it and select Look Up XXXX from the contextual menu:

This is much quicker. You don't need to use the key combination.

One does not need to click on the word, but rather pass the mouse over it and then use either three-finger tap on trackpads or control+cmd+d keyboard shortcut. Definitions will appear as the dictionaries are ordered in the Dictionary application's Settings.

You are welcome, and sometimes things resume working without our help.