Search Result for "arsenic": 
Wordnet 3.0

NOUN (2)

1. a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer;
[syn: arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane]

2. a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar;
[syn: arsenic, As, atomic number 33]

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6 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Arsenic \Ar*sen"ic\, a. (Chem.) Pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

Arsenic \Ar"se*nic\ ([aum]r"s[-e]*n[i^]k; 277), n. [L. arsenicum, Gr. 'arseniko`n, 'arreniko`n, yellow orpiment, perh. fr. 'arseniko`s or better Attic 'arreniko`s masculine, 'a`rrhn male, on account of its strength, or fr. Per. zern[imac]kh: cf. F. arsenic.] 1. (Chem.) 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[deg] 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. [1913 Webster] 2. (Com.) Arsenious oxide or arsenious anhydride; -- called also arsenious acid, white arsenic, and ratsbane. [1913 Webster]
WordNet (r) 3.0 (2006):

arsenic n 1: a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer [syn: arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane] 2: a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar [syn: arsenic, As, atomic number 33]
Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "arsenic": DDD, DDT, Paris green, antimony, arsenic trioxide, beryllium, bichloride of mercury, cadmium, carbolic acid, carbon monoxide, carbon tetrachloride, chlorine, cyanide, hydrocyanic acid, hyoscyamine, lead, mercuric chloride, mercury, mustard gas, nicotine, phenol, poison gas, prussic acid, selenium, strychnine
The Elements (07Nov00):

arsenic Symbol: As Atomic number: 33 Atomic weight: 74.922 Metalloid element of group 15. There are three allotropes, yellow, black, and grey. Reacts with halogens, concentrated oxidizing acids and hot alkalis. Albertus Magnus is believed to have been the first to isolate the element in 1250.
The Devil's Dictionary (1881-1906):

ARSENIC, n. A kind of cosmetic greatly affected by the ladies, whom it greatly affects in turn. "Eat arsenic? Yes, all you get," Consenting, he did speak up; "'Tis better you should eat it, pet, Than put it in my teacup." Joel Huck