| glucagon | (noun) a hormone secreted by the pancreas; stimulates increases in blood sugar levels in the blood (thus opposing the action of insulin) | - |
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| glucinium | (noun) a light strong brittle grey toxic bivalent metallic element | Synonyms: atomic number 4, Be, beryllium |
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| glucocorticoid | (noun) a steroid hormone that is produced by the adrenal cortex of animals; affects functioning of gonads and has anti-inflammatory activity | - |
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| glucosamine | (noun) an amino derivative of glucose that is a component of many polysaccharides | - |
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| glucose | (noun) a monosaccharide sugar that has several forms; an important source of physiological energy | - |
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| glucoside | (noun) a glycoside derived from glucose | - |
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| glucosuria | (noun) the presence of abnormally high levels of glucose in the urine | - |
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