glower
- n an angry stare
- v look at with a fixed gaze
- v look angry or sullen, wrinkle one's forehead, as if to signal disapproval
glowworm
- n the luminous larva or wingless grub-like female of a firefly
gloxinia
- n any of several plants of the genera Gloxinia or Sinningia (greenhouse gloxinias) having showy bell-shaped flowers
gloxinia perennis
- n herb of Colombia to Peru having pale purple flowers
gloxinia spesiosa
- n South American herb cultivated in many varieties as a houseplant for its large handsome leaves and large variously colored bell-shaped flowers
glucagon
- n a hormone secreted by the pancreas; stimulates increases in blood sugar levels in the blood (thus opposing the action of insulin)
glucinium
- n a light strong brittle grey toxic bivalent metallic element
glucocorticoid
- n a steroid hormone that is produced by the adrenal cortex of animals; affects functioning of gonads and has anti-inflammatory activity
glucophage
- n an antidiabetic drug (trade name Glucophage) prescribed to treat type II diabetes
glucosamine
- n an amino derivative of glucose that is a component of many polysaccharides
glucose
- n a monosaccharide sugar that has several forms; an important source of physiological energy
glucose tolerance test
- n test of the body's ability to metabolize carbohydrates; used in the diagnosis of hypoglycemia and diabetes mellitus