Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for arsenic from the 1913 edition of Webster's Revised Unabridged Dictionary. Define arsenic using one of the most comprehensive free online dictionaries on the web.

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Part of Speech: Noun
Results: 3
1. Pertaining to, or derived from, arsenic; - said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.
Part of Speech: noun
2. One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel- gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356¡ Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. The element and its compounds are active poisons. Specific gravity from 5. 7 to 5. 9. Atomic weight 75. Symbol As.
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