, or hyalophagy
, is the eating of glass
. Primarily noted as a pathological disorder, it is also considered a form of pica
. Hyalophagia is highly dangerous to humans as the consumption of glass has the possibility to cut open the stomach, intestines, and throat as it passes through the system . The eating of glass is also a performance technique common to some sideshow performances.
The word comes from Greek hyalos = glass + phagein = to eat.