sul·fu·ric

[suhl-fyoor-ik]
adjective Chemistry.
of, pertaining to, or containing sulfur, especially in the hexavalent state.

Origin:
1780–90; < French sulfurique; see sulfur, -ic

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Collins
World English Dictionary
sulphur or sulfur (ˈsʌlfə) [Click for IPA pronunciation guide]
 
n
a.  an allotropic nonmetallic element, occurring free in volcanic regions and in combined state in gypsum, pyrite, and galena. The stable yellow rhombic form converts on heating to monoclinic needles. It is used in the production of sulphuric acid, in the vulcanization of rubber, and in fungicides. Symbol: S; atomic no: 16; atomic wt: 32.066; valency: 2, 4, or 6; relative density: 2.07 (rhombic), 1.957 (monoclinic); melting pt: 115.22°C (rhombic), 119.0°C (monoclinic); boiling pt: 444.674°CRelated: thionic
 b.  (as modifier): sulphur springs
 
Related: thionic
 
[C14 soufre, from Old French, from Latin sulfur]
 
sulfur or sulfur
 
n
 
Related: thionic
 
[C14 soufre, from Old French, from Latin sulfur]
 
sulphuric or sulfur
 
adj
 
sulfuric or sulfur
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Sulfuric is always a great word to know.
So is interrobang. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
American Heritage
Science Dictionary
sulfuric   (sŭl-fyr'ĭk)  Pronunciation Key 
Containing sulfur, especially sulfur with a valence of 6. Compare sulfurous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Sulfur dioxide combines with water vapor to form sulfuric acid particles that
  scatter, reflect, and absorb sunlight.
However, they do reveal sulfuric acid, an integral component of volcanic
  eruptions.
Producers add sulfuric acid to form phosphoric acid, which is later converted
  to ammonium phosphate.
It forms sulfuric acid when it comes in contact with water.
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