• (gland, adrenal) The endocrine glands adjacent to the kidneys that consist of the outer adrenal cortex and the inner adrenal medulla in mammals.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• A flattened, roughly triangular body resting upon the upper end of each kidney; it is one of the ductless glands furnishing internal secretions (epinephrine and norepinephrine from the medulla and steroid hormones from the cortex).
  NCI
  U.S. National Cancer Institute, 2021
• A small gland that makes steroid hormones, adrenaline, and noradrenaline. These hormones help control heart rate, blood pressure, and other important body functions. There are two adrenal glands, one on top of each kidney.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• Paired glands situated in the retroperitoneal tissues at the superior pole of each kidney.
  CRISP Thesaurus
  National Institutes of Health, 2006
• A pair of glands located at the cranial pole of each of the two KIDNEYS. Each adrenal gland is composed of two distinct endocrine tissues with separate embryonic origins, the ADRENAL CORTEX producing STEROIDS and the ADRENAL MEDULLA producing NEUROTRANSMITTERS.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• Glands that sit on top of each kidney and secrete stress hormones.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• The body has two adrenal glands, one near the top of each kidney. They are endocrine glands, which secrete hormones into the bloodstream. Each adrenal gland has two parts.
  Merck Manuals
  Merck & Co., Inc., 2025
• The adrenal glands are small, yellowish organs that rest on the upper poles of the kidneys in the Gerota fascia. The right adrenal gland is pyramidal, whereas the left one is more crescentic, extending toward the hilum of the kidney.
  Medscape
  WebMD, 2025
• Adrenal gland, either of two small triangular endocrine glands one of which is located above each kidney. In humans each adrenal gland weighs about 5 grams (0.18 ounce) and measures about 30 mm (1.2 inches) wide, 50 mm (2 inches) long, and 10 mm (0.4 inch) thick. Each gland consists of two parts...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2025