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endocrine gland, endocrine, ductless gland | any of the glands of the endocrine system that secrete hormones directly into the bloodstream | |
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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 | |
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endocrine, endocrinal | of or belonging to endocrine glands or their secretions |