We found 4 dictionaries that define the word giant ragweed:

General (3 matching dictionaries)

1. giant ragweed: Merriam-Webster
2. giant ragweed: Dictionary.com
3. Giant ragweed: Wikipedia, the Free Encyclopedia

Medicine (1 matching dictionary)

4. Allergy Glossary (No longer online)

▸ Words similar to giant ragweed ▸ Usage examples for giant ragweed ▸ Idioms related to giant ragweed ▸ Wikipedia articles (New!) ▸ Words that often appear near giant ragweed ▸ Rhymes of giant ragweed ▸ Invented words related to giant ragweed