DTR 4/2/19 Online Dating Terminology: DTR Short for ‘define the relationship’. If someone asks you to DTR, you better have an answer. Example: I think we’re officially dating but we’ve never actually said so. Time to DTR. By Gonzalo Re|February 4, 2019|Categories: E-LESSONS, For Lawyers, For translators| About the Author: Gonzalo Re Marketing y Comunicación | The TR Company SA Leave A Comment Cancel reply Comment Save my name, email, and website in this browser for the next time I comment.