| Noun | 1. | endocrine - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect Synonyms: hormone, internal secretion |
| 2. | endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstream Synonyms: ductless gland, endocrine gland | |
| Adj. | 1. | endocrine - of or belonging to endocrine glands or their secretions; "endocrine system" Synonyms: endocrinal Antonyms: exocrine - of or relating to exocrine glands or their secretions |