We found 18 dictionaries that define the word grandchildren:

General (12 matching dictionaries)

1. grandchildren: Merriam-Webster
2. grandchildren: Oxford Learner's Dictionaries
3. grandchildren: Collins English Dictionary
4. grandchildren: Vocabulary.com
5. Grandchildren, grandchildren: Wordnik
6. grandchildren: Cambridge Advanced Learner's Dictionary
7. grandchildren: Wiktionary
8. grandchildren: Dictionary.com
9. grandchildren: Cambridge Essential American English Dictionary
10. Grandchildren: Wikipedia, the Free Encyclopedia
11. grandchildren: FreeDictionary.org
12. grandchildren: TheFreeDictionary.com

Business (3 matching dictionaries)

13. Bouvier's Law Dictionary 1856 Edition (No longer online)
14. Grandchildren: Legal dictionary
15. Grandchildren: Financial dictionary

Computing (1 matching dictionary)

16. Grandchildren: Encyclopedia

Medicine (1 matching dictionary)

17. Grandchildren: Medical dictionary

Slang (1 matching dictionary)

18. grandchildren: Urban Dictionary

(Note: See grandchild as well.)

Definitions from Wiktionary (grandchild) ▸ noun:  A child of someone's child. ▸ Also see grandchild Types: grandkids, grands, more... Phrases: great grandchildren, more... Adjectives: great, own, many, several, little, youngest, numerous, beautiful, future, oldest, adult ▸ Words similar to grandchildren ▸ Usage examples for grandchildren ▸ Idioms related to grandchildren ▸ Wikipedia articles (New!) ▸ Popular adjectives describing grandchildren ▸ Words that often appear near grandchildren ▸ Rhymes of grandchildren ▸ Invented words related to grandchildren