We found 18 dictionaries that define the word ghrelin:

General (11 matching dictionaries)

1. ghrelin: Oxford Learner's Dictionaries
2. ghrelin: Collins English Dictionary
3. ghrelin: Vocabulary.com
4. Ghrelin, ghrelin: Wordnik
5. ghrelin: Wiktionary
6. ghrelin: Dictionary.com
7. Ghrelin: Wikipedia, the Free Encyclopedia
8. ghrelin: Rhymezone
9. ghrelin: FreeDictionary.org
10. ghrelin: Mnemonic Dictionary
11. ghrelin: TheFreeDictionary.com

Medicine (3 matching dictionaries)

12. ghrelin: Merriam-Webster Medical Dictionary
13. Ghrelin: Merck Manuals
14. Ghrelin: Medical dictionary

Miscellaneous (1 matching dictionary)

15. ghrelin: Wordcraft Dictionary

Science (2 matching dictionaries)

16. Agricultural Thesaurus and Glossary (No longer online)
17. Ghrelin: Cytokines & Cells Online Pathfinder Encyclopaedia

Slang (1 matching dictionary)

18. ghrelin: Urban Dictionary

(Note: See ghrelins as well.)

Definitions from Wiktionary (ghrelin) ▸ noun:  (biochemistry) A peptide hormone, secreted in the stomach when empty, that increases appetite and secretion of growth hormone from the pituitary gland. Similar: proghrelin, growth hormone, preproghrelin, gastrin, somatocrinin, obestatin, incretin, gastrotropin, gonadotropin-releasing hormone, thyrotropin-releasing hormone, more... Opposite: leptin, satiety hormone Adjectives: acyl, human, novel, hypothalamic, peripheral, endogenous, acylated, elevated, central, high, gastric ▸ Words similar to ghrelin ▸ Usage examples for ghrelin ▸ Idioms related to ghrelin ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ghrelin ▸ Words that often appear near ghrelin ▸ Rhymes of ghrelin ▸ Invented words related to ghrelin