hydrofluoric acid

hydrofluoric acid

noun
a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.

Origin:
1815–25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Hydrofluoric acid is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
the offspring of a zebra and a donkey.
Collins
World English Dictionary
hydrofluoric acid (ˌhaɪdrəʊfluːˈɒrɪk)
 
n
the colourless aqueous solution of hydrogen fluoride: a strong acid that attacks glass

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
hydrofluoric acid   (hī'drō-flr'ĭk, -flôr'-)  Pronunciation Key 
A colorless, fuming, aqueous solution of hydrogen fluoride. It is corrosive and is used to etch or polish glass, to clean certain metals before plating, and to clean masonry. It is very poisonous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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