Definitions of platinum

  1. a heavy precious metallic element; gray- white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits
  2. A metallic element, intermediate in value between silver and gold, occurring native or alloyed with other metals, also as the platinum arsenide ( sperrylite). It is heavy tin- white metal which is ductile and malleable, but very infusible, and characterized by its resistance to strong chemical reagents. It is used for crucibles, for stills for sulphuric acid, rarely for coin, and in the form of foil and wire for many purposes. Specific gravity 21. 5. Atomic weight 194. 3. Symbol Pt. Formerly called platina.
  3. A heavy, silver- white precious metal, hard to melt or resolve, but capable of being hammered or pressed thin.
  4. A metallic element, symbol Pt; atomic weight 195, of silver white color and of about the consistence of copper; it occurs usually as spongy p., of gray color soft and porous; it is used largely for making chemical apparatus because of its resistance to acids; some of its salts have been employed in the treatment of syphilis in doses of gr. 1/ 8- 1/ 2 ( 0. 008- 0. 03).
  5. Metal having appearance of aluminum, used largely in dentistry.
  6. A heavy metal resembling silver.
  7. A whitish metallic element, able to resist heat and acids. platina.
  8. A metal of a dull silver colour, and the heaviest of the class.
  9. A metal of a greyish- white colour, very valuable on account of its hardness, infusibility, and the resistance it offers to the action of air and moisture- it is also ductile, malleable, of great tenacity, and the heaviest of known metals.

Usage examples for platinum

  1. Platinum wire and foil. – An Introduction to Chemical Science by R.P. Williams
  2. Now we will find the lost platinum mine!" – Tom Swift and his Air Glider or, Seeking the Platinum Treasure by Victor Appleton
  3. Have you ever wondered, Captain Hunter, what might happen if the platinum grid was not removed from a patient's brain? – The Cartels Jungle by Irving E. Cox, Jr.
  4. Look here, Keith, I told you I was sure the platinum-" " Your brain is becoming platinum. – The Clever Woman of the Family by Charlotte M. Yonge
  5. This ball is not really of platinum. – Master Tales of Mystery, Volume 3 by Collected and Arranged by Francis J. Reynolds
  6. Then again: " Here is platinum fused with iron and another substance I do not know." – A Republic Without a President and Other Stories by Herbert Ward
  7. A strip of hard rubber with pointed ends rests perpendicularly on a platinum plate, beneath which is a carbon button, under which again lies another platinum plate. – Edison, His Life and Inventions by Frank Lewis Dyer and Thomas Commerford Martin
  8. In the first stage bubbles of oxygen rise steadily from the platinum wire, and in the interrupted stage they rise at longer intervals, but regularly. – Hertzian Wave Wireless Telegraphy by John Ambrose Fleming
  9. Our manufacturers are able to turn out platinum- wire that can only be seen when it is made red- hot. – The Life of the Spider by J. Henri Fabre
  10. Now, I'll tell you why I was upset by seeing your platinum stud. – The Orange-Yellow Diamond by J. S. Fletcher
  11. The alteration of sensibility in the ordinary contact form of relay is the pressure that is necessary to bring the platinum points of the circuit closer together, so as to pass the minimum current which will work the telegraph printer. – Hertzian Wave Wireless Telegraphy by John Ambrose Fleming
  12. A solution of platinum chloride has no effect. – Photographic Reproduction Processes by P.C. Duchochois
  13. We're mounting it in a platinum lady's ring." – Flowing Gold by Rex Beach
  14. If a hammer break is used at all, it is essential to make the contacts of very stout pieces of platinum, and from time to time, as they get burnt away or roughened, they must be smoothed up with a fine file. – Hertzian Wave Wireless Telegraphy by John Ambrose Fleming
  15. But if for a I take oxygen, for b hydrogen, and for c a piece of spongy platinum, I find the first two combine with the common signs of combustion and form water, the third in the mean time undergoing no perceptible change. – The Complete PG Works of Oliver Wendell Holmes, Sr. by Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)
  16. Another interesting experiment was a comparison of the effect of electrical charges on the ferments of human blood, yeast, plant and platinum. – The Universe a Vast Electric Organism by George Woodward Warder
  17. But we have a combination of all the qualities we can desire in Platinum. – Familiar Letters of Chemistry by Justus Liebig
  18. It was oddly heavy, twice the weight, I should say, of platinum. – The Metal Monster by A. Merritt
  19. For Russia to- day is in a position to export only a little gold, a little platinum, a little hemp, flax, and wood. – The Bullitt Mission to Russia by William C. Bullitt
  20. They are of three metals, gold, platinum, and silver. – Là-bas by J. K. Huysmans