We found 19 dictionaries that define the word B cells:

General (8 matching dictionaries)

1. B cells: Merriam-Webster
2. B-cells, B-cells: Collins English Dictionary
3. B cells: Vocabulary.com
4. B-cells: Wordnik
5. B-cells, B cells: Wiktionary
6. B-cells: Dictionary.com
7. B-cells, B cells: Wikipedia, the Free Encyclopedia
8. B-cells, B cells: TheFreeDictionary.com

Business (1 matching dictionary)

9. B cells: Legal dictionary

Computing (1 matching dictionary)

10. B-cells, B cells: Encyclopedia

Medicine (7 matching dictionaries)

11. AIDSinfo Glossary (No longer online)
12. Breast Cancer Talking Dictionary (No longer online)
13. Health and Wellness Dictionary (No longer online)
14. National Immunization Program Glossary (No longer online)
15. B-Cells, B Cells: Medical Dictionary Online
16. B-cells, B cells: Medical dictionary
17. Vitamin Glossary (No longer online)

Science (1 matching dictionary)

18. B-cells: Cytokines & Cells Online Pathfinder Encyclopaedia

Tech (1 matching dictionary)

19. Washington State Definitions and Abbreviations of Vetrinary Terms (No longer online)

(Note: See b_cell as well.)

Definitions from Wiktionary (B cell) ▸ noun:  (immunology) A lymphocyte, developed in the bursa of birds and the bone marrow of other animals, that produces antibodies and is co-responsible for the immune system. ▸ Also see b_cell Phrases: pre b cells, memory b cells, immunoblastic sarcoma of b cells, plasma b cells, Follicular B helper T cells, more... ▸ Words similar to B cells ▸ Usage examples for B cells ▸ Idioms related to B cells ▸ Wikipedia articles (New!) ▸ Words that often appear near B cells ▸ Rhymes of B cells ▸ Invented words related to B cells