Words nearby petrosa
How to use petrosa in a sentence
Cement or crusta petrosa forms the outermost layer of the root of the tooth.The Vertebrate Skeleton|Sidney H. Reynolds
The uses of the ivory, enamel, and crusta petrosa must be now noticed.
The ivory is less dense than the enamel, and harder than the crusta petrosa.
The crusta petrosa is shown to be thicker at the root of the fang, and at the base of the infundibulum, than at other parts.
In amount, the crusta petrosa is second to the ivory, being more in quantity than the enamel.