Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Arsenic" Definition
noun
A highly poisonous metallic element having three allotropic forms, yellow, black, and gray, of which the brittle, crystalline gray is the most common. Arsenic and its compounds are used in insecticides, weed killers, solid-state doping agents, and various alloys. Atomic number 33; atomic weight 74.922; valence 3, 5. Gray arsenic melts at 817°C (at 28 atm pressure), sublimes at 613°C, and has a specific gravity of 5.73. See Table at element.
Source: American Heritage Dictionary
Arsenic trioxide.
Source: American Heritage Dictionary
A trivalent and pentavalent metalloid poisonous element that is commonly metallic steel gray, crystalline, and brittle and is used especially in wood preservatives, alloys, and semiconductors .
Source: Merriam-Webster
A poisonous trioxide AsO or AsO of arsenic used especially as an insecticide or weed killer .
Source: Merriam-Webster
adjective
Of or containing arsenic, especially with valence 5.
Source: American Heritage Dictionary
Of, relating to, or containing arsenic especially with a valence of five.
Source: Merriam-Webster