CDR Registered Dietitian (RD) Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the CDR Registered Dietitian (RD) Vocabulary Games
4 free word games built on 20 CDR Registered Dietitian (RD) terms across 10 topics. Every game deals terms at random and shows what each term means, so you can keep playing as long as you like.
How to Play
- 1.Read the clue and type the term (3 to 6 letters).
- 2.Green: right spot. Yellow: wrong spot. Gray: not in the term.
- 3.Solve it in 6 tries, then read the explanation.
- 1.Swap two neighboring tiles to line up 3 of the same term.
- 2.Longer lines, two lines at once and chains score more.
- 3.Play until no swap can make a line.
- 1.Flip two cards. A matching pair stays face up.
- 2.Each pair you find shows what the term means.
- 3.Clear the board in as few moves as you can.
- 1.Find each listed term in the letter grid.
- 2.Drag across its letters: across, down or diagonally.
- 3.Find all five as fast as you can.
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Topics in the CDR Registered Dietitian (RD) Vocabulary Game
Food and nutrition sciences
Research applications
Nutrition care
Screening and assessment
Planning and intervention
Regulatory compliance
Financial management
Human resource management
Quality management
Sanitation and safety
Sources for these terms (24)
- Nutrition Care Process · Source checked 2026-11-03
- Medical nutrition therapy services · Source checked 2026-11-03
- About Body Mass Index (BMI) · Source checked 2026-11-03
- Anemia · Source checked 2026-11-03
- Edema · Source checked 2026-11-03
- Celiac Disease · Source checked 2026-11-03
- Home Tube Feeding Booklet: Non-Pump Feeding · Source checked 2026-11-03
- Why the DASH Eating Plan Works · Source checked 2026-11-03
- What Is Parenteral Nutrition (IV Nutrition)? · Source checked 2026-11-03
- About CMS · Source checked 2026-11-03
- Acute Inpatient PPS · Source checked 2026-11-03
- About OSHA · Source checked 2026-11-03
- QAPI Description and Background · Source checked 2026-11-03
- Hazard Analysis Critical Control Point (HACCP) · Source checked 2026-11-03
- The Big Thaw — Safe Defrosting Methods · Source checked 2026-11-03
- "Danger Zone" (40°F - 140°F) · Source checked 2026-11-03
- Your Digestive System & How It Works · Source checked 2026-11-03
- Gluten and Food Labeling · Source checked 2026-11-03
- Questions and Answers on the Gluten-Free Food Labeling Final Rule · Source checked 2026-11-03
- About Folic Acid · Source checked 2026-11-03
- IDE Institutional Review Boards (IRB) · Source checked 2026-11-03
- HACCP Principles & Application Guidelines · Source checked 2026-11-03
- FDA Food Code 2026 · Source checked 2026-11-03
- Cooling Cooked Time/Temperature Control for Safety Foods and the FDA Food Code: for Food Employees · Source checked 2026-11-03
About the CDR RD Exam
The CDR RD exam is the credentialing examination for registered dietitian nutritionists. It covers four domains: Principles of Dietetics (21%), Nutrition Care for Individuals and Groups (45%), Management of Food and Nutrition Programs (21%), and Foodservice Systems (13%). The exam is computer-based and administered at Pearson VUE testing centers.
Exam sponsor: CDR (Commission on Dietetic Registration). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Assessment
Variable-length assessment
Time Limit
3 hours
Passing Score
Scaled score of 25 (scale 1-50)
Reported exam pass rate: 83.93% within one year of first attempt (2025). All pathways; CDR also publishes first-time rates by pathway This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the RD vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How do the RD vocabulary games work?
There are 4 games built on 20 RD terms. In Guess the Term, a clue describes one term and you have six tries to spell it, with green, yellow and gray letters showing how close you are. In Term Match, six terms appear as colored tiles; swap neighbors to line up three or more of the same term, and each match shows what the term means. In Term Pairs, twelve face-down cards hide six pairs of terms; flip two at a time to find each pair, and every pair you find shows what the term means. In Term Search, five terms hide in a grid of letters, reading across, down or diagonally; drag across a term to circle it, and each term you find shows what it means.
Where do the RD terms come from?
OpenExamPrep researched each term from the CDR (Commission on Dietetic Registration) content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
What is the RD exam pass rate?
CDR reports that 83.93% of examinees passed within one year of their first attempt in the year ending 2025. Results vary by pathway: 83.23% for dietetic internships and 85.66% for coordinated programs.
How many questions are on the RD exam?
The CDR RD exam contains 125-145 questions: 100-120 scored plus 25 unscored pretest questions. The exam uses variable length testing, so the number of questions varies based on your performance.