Dictionary / Thesaurus activation

I created a keyboard shortcut for activating the Dictionary. I wish I could activate it when the cursor is at the end of the word and not have to move the cursor back into the middle of the word.

I often want to look at alternatives or confirm definition as I type and it would be faster if I did not have to move my hands from keyboard and go to either arrows or trackpad.

This may be an OS function, but if Scrivener could target the proceeding word it would be nice.

Thank you, Keith.