Noun: ductless gland
- Any of the glands of the endocrine system that secrete hormones directly into the bloodstream
"The pituitary gland is often called the master ductless gland";
- endocrine gland, endocrine
Derived forms: ductless glands
Type of: gland, secretor, secretory organ
Part of: endocrine system
Encyclopedia: Ductless gland