The surgical operation of making an opening into the maxillary sinus from the nose or the mouth, typically in order to drain pus or mucus from the sinus; an instance of this.
Origin
Early 20th century. From antrum + -o- + -stomy.
Definition of antrostomy in US English:
antrostomy
nounanˈtrɒstəmi
The surgical operation of making an opening into the maxillary sinus from the nose or the mouth, typically in order to drain pus or mucus from the sinus; an instance of this.