"endocrine" in the noun sense
1. hormone, endocrine, internal secretion
the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
2. endocrine gland, endocrine, ductless gland
any of the glands of the endocrine system that secrete hormones directly into the bloodstream
"endocrine" in the adjective sense
1. endocrine, endocrinal
of or belonging to endocrine glands or their secretions
"endocrine system"
Source: WordNet® (An amazing lexical database of English)
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