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HYDROGEN ION
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I. (noun)
Sense 1
Meaning:
A positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus
Classified under:
Nouns denoting natural objects (not man-made)
Hypernyms ("hydrogen ion" is a kind of...):
cation (a positively charged ion)
proton (a stable particle with positive charge equal to the negative charge of an electron)
Holonyms ("hydrogen ion" is a part of...):
hydrogen atom (an atom of hydrogen)
Context examples:
An acid is a chemical that gives off hydrogen ions in water and forms salts by combining with certain metals.
(Acidity, NCI Dictionary)
A substance which, when added to water, decreases the hydrogen-ion concentration; a solution containing a base, a substance that combines with a hydrogen ion in solution.
(Alkaline, NOAA Paleoclimate Glossary)
A substance that yields hydrogen ions or protons in aqueous solutions; a substance capable of accepting a pair of electrons for the formation of a coordinate covalent bond; a substance whose hydrogen can be replaced by metals or basic radicals, or which react with bases to form salts and water.
(Acid, NCI Thesaurus)
Omeprazole forms a stable disulfide bond with the sulfhydryl group of the hydrogen-potassium (H+ - K+) ATPase found on the secretory surface of parietal cells, thereby inhibiting the final transport of hydrogen ions (via exchange with potassium ions) into the gastric lumen and suppressing gastric acid secretion.
(Omeprazole, NCI Thesaurus)
Once converted to its active sulfenamide form, disuprazole forms a stable disulfide bond with the sulfhydryl group of the hydrogen-potassium (H+/K+) ATPase found on the secretory surface of parietal cells, thereby inhibiting the final transport of hydrogen ions (via exchange with potassium ions) into the gastric lumen and suppressing gastric acid secretion.
(Disuprazole, NCI Thesaurus)
A substance that dissociates to give hydroxide ions in aqueous solutions; a substance capable of donating a pair of electrons (to an acid) for the formation of a coordinate covalent bond; a substance whose molecule or ion can combine with a proton (hydrogen ion); a substance that combines with acids to form salts.
(Base, NCI Thesaurus)
The unit is usually expressed in grams and is equal to the amount of substance that gains or loses one mole of electrons in a redox reaction, or to the amount of substances that releases or accepts one mole of hydrogen ions in a neutralization reaction; or to the amount of electrolyte that carries one mole of positive or negative charge.
(Equivalent Weight, NCI Thesaurus)
Quantity of dimension one used to express on a scale from 0 to 14 the amount-of-substance concentration of hydrogen ion of dilute aqueous solution, calculated as the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter.
(pH, NCI Thesaurus)
Inhibition of this enzyme in the kidney results in a reduction in the availability of hydrogen ions for active transport in the renal tubule lumen, thereby leading to increased bicarbonate and cation excretion, and increased urinary volume.
(Acetazolamide Sodium, NCI Thesaurus)
Hydrogen ion in the lumen is trapped by urinary buffers.
(Collecting Duct Acid Secretion Pathway, NCI Thesaurus/KEGG)
