meal marker

English

Noun

meal marker (plural meal markers)

1. (medicine) A substance added to food to allow the measurement of how quickly it passes through the segments of the digestive tract.
   • 2013, Thomas F. Schweizer, Christine A. Edwards, Dietary Fibre — A Component of Food: Nutritional Function in Health and Disease, page 188:

     The incorporation of guar gum into a radiolabelled homogenised meal in rats delayed the delivery of the meal marker from the stomach into the small intestine and also from the small intestine into the colon.