Definitions of hydrogen

  1. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
  2. A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air ( hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids ( as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1.
  3. A colorless, gaseous, inflammable substance, which becomes liquid under great pressure, and is the lightest element yet known, much lighter than air; when combined with oxygen it produces water.
  4. An odorless, colorless, tasteless element, gaseous at ordinary temperatures and pressure; symbol H, atomic weight 1. It is the lightest known substance, and the weight of one of its atoms is the unit of atomic weights. It is readily replaceable in many compounds by other elements or radicals, and this substitution of the hydrogen atoms in an acid forms a salt.
  5. A light gas, producing water upon oxidation.
  6. A gas which in combination with oxygen produces water, an elementary gaseous substance, the lightest of all known substances, and very inflammable.
  7. A gas, one of the elements of water, and the lightest substance known.
  8. Hydrogenous.
  9. A colorless, odorless, tasteless, gaseous element, the lightest substance known.
  10. A highly inflammable gas, constituting one of the elements of water, and the lightest of aeriform bodies.
  11. A gaseous body, and the lightest of all known bodies- called also inflammable air, and producing water when combined with oxygen.

Usage examples for hydrogen

  1. " Hydrogen is twice as light as helium," Tin Philosopher remarked judiciously. – Bread Overhead by Fritz Reuter Leiber
  2. If a deep marking is desired, in order that it may afterwards be filled with some pigment, a better result is obtained by the use of liquid commercial hydrofluoric acid, which is a solution of hydrogen fluoride in water. – A Handbook of Laboratory Glass-Blowing by Bernard D. Bolas
  3. The main portion of the lead compound was decomposed under alcohol by hydrogen sulphide, filtered, and the alcoholic filtrate evaporated in vacuo. – Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron) by William Anderson Syme
  4. Yes, I substituted hydrogen. – Bread Overhead by Fritz Reuter Leiber
  5. May not hydrogen, carbon, oxygen, nitrogen, and sulphur all be compounds? – Astronomy for Amateurs by Camille Flammarion
  6. The hydrogen lines still rather prominent but not so broad as in the preceding type. – Lectures on Stellar Statistics by Carl Vilhelm Ludvig Charlier
  7. " Even hydrogen bombs are pretty feeble by comparison," Rick agreed. – The Flaming Mountain by Harold Leland Goodwin
  8. Then we see the softer clouds which cover all visible space above; they too give us rain but in a more quiet way and are more extended in space; they shade the sun, and form water by uniting oxygen and hydrogen, and supply vegetation and all demands for water. – Philosophy of Osteopathy by Andrew T. Still
  9. Some good authorities recommend painting the cankers with lemon juice and putting a piece of alum in the drinking water, but we prefer the peroxide of hydrogen treatment. – Profitable Squab Breeding by Carl Dare
  10. It was more powerful than hydrogen, and simple to make. – Tom Swift and his Wizard Camera or, Thrilling Adventures while taking Moving Pictures by Victor Appleton
  11. This hydrogen is a very beautiful substance. – The Chemical History Of A Candle by Michael Faraday
  12. There is a special arrangement by which the " pilot"- the man who steers and operates the airship- can at any time measure the pressure of hydrogen in the balloon, thus knowing what he has to count on in the way of carrying power. – Kelly Miller's History of the World War for Human Rights by Kelly Miller
  13. Besides, the smell would have betrayed it, and had this been the case, Michel Ardan could not with impunity have lighted a match in a medium filled with hydrogen. – The Moon-Voyage by Jules Verne
  14. The melancholy story of Mr Parrett and the sulphuretted hydrogen was recounted. – The Willoughby Captains by Talbot Baines Reed
  15. In 1767 a Dr. Black of Edinburgh suggested that a thin bladder could be made to ascend if filled with inflammable air, the name then given to hydrogen gas. – Marvels of Modern Science by Paul Severing
  16. Is it not plain to the man of reason that the two gases, oxygen and hydrogen, do unite in the lungs, form water and give supply to this great river of water that washes life out in but a few hours in cases of cholera and other diseases. – Philosophy of Osteopathy by Andrew T. Still
  17. Here have been projected on this page, as in the disk of an oxy- hydrogen microscope, some of the small and active thoughts that swarmed almost unsuspected in Richard Arden's mind. – Checkmate by Joseph Sheridan Le Fanu