intumescence

Carbonate of Soda dissolves it upon platinum wire in the oxidation flame with intumescence, to a clear bead, which appears milk-white after cooling.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

Notice whether the substance fuses with the bead, and if so, whether there is intumescence or not.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

Puff′iness, state of being puffy or turgid: intumescence; Puff′ing, the act of praising extravagantly.—adv.

From Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) by Various

However, I may tell you that the bird is simous; yblent in the sunlight, but withal strenuous-eyed; its blood inclined to intumescence.

From The O'Ruddy A Romance by C. D. (Charles D.) Williams

Microcosmic salt dissolves the compounds of antimony in the flame of oxidation with intumescence, to a clear light-yellow colored bead, which when cold is colorless.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous