a colorless corrosive gas, HF, the anhydride of hydrofluoric acid, used chiefly as a catalyst and in the fluorination of hydrocarbons.
dihydrogen monoxideRead more in this article about some frequently asked questions and fun facts related to our definitions.
What is the exact meaning of “mosque” (and “temple” and “church” while we’re at it)?Debate is easy, and yelling is easier. How often, however, do people examine their most basic knowledge? Right now, the proposed construction of an Islamic worship center in relative proximity to “Ground Zero” in Manhattan is a nexus of conflict and emotion. The missing ingredient is definition. Let’s examine basic terms, starting with mosque. All the variants of “mosque” in European languages go back to the …
- hydrogen chloride,
- hydrogen cyanide,
- hydrogen donor,
- hydrogen electrode,
- hydrogen embrittlement,
- hydrogen iodide,
- hydrogen ion,
- hydrogen peroxide,
- hydrogen sulfide,
- hydrogen sulphate
Origin of hydrogen fluoride
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a colourless poisonous corrosive gas or liquid made by reaction between calcium fluoride and sulphuric acid: used as a fluorinating agent and catalyst. Formula: HF
an aqueous solution of hydrogen fluoride; hydrofluoric acid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
A corrosive compound that exists as a colorless, fuming liquid or a highly soluble gas. Hydrogen fluoride is used as a reagent, catalyst, and fluorinating agent, in the refining of uranium, and in making many fluorine compounds. An aqueous solution of hydrogen fluoride is called hydrofluoric acid. Chemical formula: HF.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.