infusibility

In compactness of texture and infusibility it was reckoned perfect a hundred years ago.

The Mirror of Literature, Amusement, and Instruction Volume 19, No. 548, May 26, 1832 Various

It should be mentioned, however, that high infusibility cannot always be taken as a test of purity, for the most infusible, or rather most viscous, sample examined by the writer contained more lithium than some less viscous samples.

On Laboratory Arts Richard Threlfall

Austria, "the ramshackle empire," was in danger of disintegrating from a variety of causes, not the least of which was the infusibility of its racially different elements.

The New York Times Current History of the European War, Vol. 1, January 9, 1915 What Americans Say to Europe Various

The French royal manufactory at Sevrès, near Paris, has been for several years in a gradually advancing state, with regard to the whiteness, compactness, and infusibility of the body, the elegance of the forms, the brilliancy of the colours, the elaborateness of the drawing, and the superb enrichments of the gilding.

The Mirror of Literature, Amusement, and Instruction Volume 19, No. 548, May 26, 1832 Various

The knowledge thus obtained that current passing through the platinum during exhaustion would drive out occluded gases (i.e., gases mechanically held in or upon the metal), and increase the infusibility of the platinum, led him to aim at securing greater perfection in the vacuum, on the theory that the higher the vacuum obtained, the higher would be the infusibility of the platinum burner.

Edison, His Life and Inventions, vol. 1 1910

The knowledge thus obtained that current passing through the platinum during exhaustion would drive out occluded gases (i.e., gases mechanically held in or upon the metal), and increase the infusibility of the platinum, led him to aim at securing greater perfection in the vacuum, on the theory that the higher the vacuum obtained, the higher would be the infusibility of the platinum burner.

Edison, His Life and Inventions Frank Lewis Dyer 1905

Let me next call your attention to the importance of the infusibility of charcoal in connection with its use as fuel.

Religion and Chemistry 1880

How evidently, then, has the attribute of infusibility been adapted to this important function which carbon has been appointed to subserve!

Religion and Chemistry 1880

And have we not another remarkable evidence of Divine wisdom in the fact that carbon, a substance which, on account of its infusibility and other qualities, is so well adapted for fuel, has been made a great reservoir of heat, from which man can draw an unlimited supply?

Religion and Chemistry 1880

The infusibility of this substance renders it greatly superior to platinum for purposes of the electric light.

Notable Events of the Nineteenth Century Great Deeds of Men and Nations and the Progress of the World Various 1870