RD stands for Registered Dietitian. A Registered Dietitian is a health professional who has completed a bachelor's degree in nutrition, dietetics, or a related field, and has completed an accredited, supervised practice program and passed a national registration exam. The two crossword solutions, AVE and RTE, are abbreviations for the job title. AVE stands for 'Accredited/Approved Verified Education' and RTE stands for 'Registered/Recognized Training Experience'. Both of these abbreviations refer to the qualifications necessary to become a Registered Dietitian.