Meaning & use
arsenic
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A highly toxic, brittle, grayish chemical element, historically used as a poison and today used in some pesticides and semiconductors.
See it in a sentence
Traces of arsenic were found in the old well water.
Arsenic poisoning was a common plot device in Victorian mystery novels.
A note on using this word
Its chemical symbol is As and atomic number 33; the word comes from Greek 'arsenikon,' referring to a yellow pigment.
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