antimony

N พลวง  pluang

ANTIMONY

n.[Low L. antimonium.] Primarily, a metallic ore consisting of sulphur combined with a metal; the sulphuret of antimony, the stibium of the Romans and of the Greeks. It is a blackish mineral, which stains the hands, hard, brittle, full of long, shining, needlelike striae. It is found in the mines of Bohemia, and Hungary; in France and England, and in America. This word is also used for the pure metal of regulus of antimony, a metal of a grayish or silvery white, very brittle, and of a plated or scaly texture, and of moderate specific gravity. By exposure to air, its surface becomes tarnished, but does not rust. It is used as an ingredient in concave mirrors, giving them a finer texture. In bells, it renders the sound more clear; it renders tin more hard, white and sonorous, and gives to printing types more firmness and smoothness. It is also useful in promoting the fusion of metals, and especially in casting cannon balls. In its crude state, it is harmless to the human constitution; but many of its preparations act violently as emetics and cathartics. It has also a peculiar efficacy in promoting the secretions, particularly as a sudorific.

ANTIMONY

An "ti *mo *ny, n. Etym: [LL. antimonium, of unknown origin. ] (Chem. )

antimony

an ti mo ny |ˈantəˌmōnē ˈæn (t )əˌmoʊni | ▶noun the chemical element of atomic number 51, a brittle silvery-white metalloid. (Symbol: Sb ) Antimony was known from ancient times; the naturally occurring black sulfide was used as the cosmetic kohl. The element is used in alloys, usually with lead, such as pewter, type-metal, and Britannia metal. DERIVATIVES an ti mo ni al |ˌantəˈmōnēəl |adjective, an ti mo nic |ˌantəˈmänik |adjective, an ti mo ni ous |ˌantəˈmōnēəs |adjective ORIGIN late Middle English (denoting stibnite, the most common ore of the metal ): from medieval Latin antimonium, of unknown origin. The current sense dates from the early 19th cent.

antimony

antimony |ˈantɪməni | ▶noun [ mass noun ] the chemical element of atomic number 51, a brittle silvery-white semimetal. (Symbol: Sb ) Antimony was known from ancient times; the naturally occurring black sulphide was used as the cosmetic kohl. The element is used in alloys, usually with lead, such as pewter, type metal, and Britannia metal. DERIVATIVES antimonial |-ˈməʊnɪəl |adjective, antimonic |-ˈmɒnɪk |adjective, antimonious |-ˈməʊnɪəs |adjective ORIGIN late Middle English (denoting stibnite, the most common ore of the metal ): from medieval Latin antimonium, of unknown origin. The current sense dates from the early 19th cent.

antimony

an ti mo ny /ǽntəmòʊni |ǽntɪməni /名詞 U 〘化 〙アンチモン 〘金属元素; ｟記号 ｠Sb 〙.