from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Suitable for infusion; capable of being infused.

from The Century Dictionary.

  • Capable of being infused.
  • Not fusible; incapable of fusion or of being dissolved or melted: as, an infusible crucible.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Capable of being infused.
  • adjective Not fusible; incapable or difficult of fusion, or of being dissolved or melted.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective That cannot be fused; unmeltable
  • adjective From which an infusion may be made


Sorry, no etymologies found.


  • Physical Geology is full of such selections — of the picking out of the soft from the hard, of the soluble from the insoluble, of the fusible from the infusible, by natural agencies to which we are certainly not in the habit of ascribing consciousness.


  • He subsequently used the furnace to volatilize many substances which had been regarded as infusible and to prepare many new compounds, particularly carbides, silicides and borides; in 1891 he discovered carborundum.

    Henri Moissan - Biography

  • If directed against some infusible substance like ordinary lime (calcium oxide), the heat is so intense that the lime becomes incandescent and glows with a brilliant light.

    An Elementary Study of Chemistry

  • It may also occur as the amorphous non-poisonous variety, a red opaque infusible substance, insoluble in carbon disulphide.

    Aids to Forensic Medicine and Toxicology

  • The hot carbon monoxide passing over the hot magnetic oxide quickly reduces it down to metallic iron, which, being in a spongy condition, acts more freely on the steam during later makes than it did at first, and being infusible at the temperature employed, may be used for a practically unlimited period.

    Scientific American Supplement, No. 795, March 28, 1891

  • It is one of the most infusible of the metals, requiring a temperature little short of 3000° for fusion.

    An Elementary Study of Chemistry

  • 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

  • The greatest illuminating effect from a given bulk of gas is obtained by mixing it with the requisite proportion of oxygen, and holding in the flame of the burning mixture a piece of some solid infusible and non-volatile substance, such as lime.

    Scientific American Supplement, No. 623, December 10, 1887

  • Lime is so infusible that it is frequently employed for the materials of crucibles in which the highest melting metals are fused, and for the pencils in the calcium light because it will stand extremely high temperatures.

    Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon

  • Metallic thorium is brittle and almost infusible; the powder takes a metallic luster under pressure, is permanent in the air at temperatures up to 120°, takes fire below a red heat either in air or oxygen, and burns with a dazzling luster, leaving

    Scientific American Supplement, No. 365, December 30, 1882


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