A material used as a cement and for fillings, made from a powdered silicate glass bonded with an ionomer such as polyacrylic acid; frequently attributive.
Origin
1970s.
Definition of glass ionomer in US English:
glass ionomer
noun
Dentistry
A material used as a cement and for fillings, made from a powdered silicate glass bonded with an ionomer such as polyacrylic acid; frequently attributive.