English-Thai Dictionary

cobalt

N โคบอลต์  กัมมันตภาพรังสี โคบอลต์  ko-bon

 

cobalt blue

N สาร สีน้ำเงิน เข้ม ที่ เป็น ส่วนผสม ของ โคบอล ท์ และ อลูมิเนียม ออกไซด์  san-se-nam-ngen-kem-ti-pen-suan-pa-som-kong-ko-bon-lae-ar-lu-mi-niam-ook-sai

 

cobalt blue

N สีน้ำเงิน เข้ม  se-nam-ngen-kem

 

cobaltic

A เกี่ยวกับ โคบอล ท์ 

 

cobaltite

N แร่ โคบอล ท์ ที่ มี โคบอล ท์ อาร์ ซิ นิค ซัล ไฟ ด์ 

 

cobaltous

A ประกอบด้วย โคบอล ท์ 

 

Webster's 1828 Dictionary

COBALT

n.A mineral of a reddish gray or grayish white color, very brittle, of a fine close grain, compact, but easily reducible to powder. It crystalizes in bundles of needles, arranged one over another. It is never found in a pure state; but usually as an oxyd, or combined with arsenic or its acid, with sulphur, iron, etc. Its ores are arranged under the following species, viz. Arsenical cobalt, of a white color, passing to steel gray; its texture is granular, and when heated it exhales the odor of garlic: gray cobalt, a compound of cobalt, arsenic, iron, and sulphur, of a white color, with a tinge of red; its structure is foliated, and its crystals have a cube for their primitive form; sulphuret of cobalt, compact and massive in its structure: oxyd of cobalt, brown or brownish black, generally friable and earthy: sulphate and arseniate of cobalt, both of red color, the former soluble in water. The impure oxyd of cobalt is called zaffer; but when fused with three parts of siliceous sand and an alkaline flux, it is converted into a blue glass, called smalt. The great use of cobalt is to give a permanent blue color to glass and enamels upon metals, porcelain and earthern wares. Cobalt-bloom, acicular arseniate of cobalt.
Cobalt-crust, earthy arseniate of cobalt.

 

COBALTIC

a.Pertaining to cobalt, or consisting of it; resembling cobalt, or containing it.

 

Webster's 1913 Dictionary

COBALT

Co "balt (; 277, 74 ), n. Etym: [G. kobalt, prob. fr. kobold, kobel, goblin, MHG. kobolt; perh. akin to G. koben pigsty, hut, AS. cofa room, cofgodas household gods, Icel. kofi hut. If so, the ending -old stands for older -walt, -wald, being the same as -ald in E. herald and the word would mean ruler or governor in a house, house spirit, the metal being so called by miners, because it was poisonous and troublesome. Cf. Kobold, Cove, Goblin. ]

 

1. (Chem. )

 

Defn: A tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co.

 

Note: It occurs in nature in combination with arsenic, sulphur, and oxygen, and is obtained from its ores, smaltite, cobaltite, asbolite, etc. Its oxide colors glass or any flux, as borax, a fine blue, and is used in the manufacture of smalt. It is frequently associated with nickel, and both are characteristic ingredients of meteoric iron.

 

2. A commercial name of a crude arsenic used as fly poison. Cobalt bloom. Same as Erythrite. -- Cobalt blue, a dark blue pigment consisting of some salt of cobalt, as the phosphate, ignited with alumina; -- called also cobalt ultramarine, and Thenard's blue. -- Cobalt crust, earthy arseniate of cobalt. -- Cobalt glance. (Min. ) See Cobaltite. -- Cobalt green, a pigment consisting essentially of the oxides of cobalt and zinc; -- called also Rinman's green. -- Cobalt yellow (Chem. ), a yellow crystalline powder, regarded as a double nitrite of cobalt and potassium.

 

COBALTIC

Co *balt "ic (; 74 ), a. Etym: [Cf. F. cobaltique.] (Chem. )

 

Defn: Pertaining to, derived from, or containing, cobalt; -- said especially of those compounds in which cobalt has higher valence; as, cobaltic oxide. Luteo-cobaltic compounds (Chem. ), an extensive series of complex yellow compounds of ammonia and cobaltic salts. -- Roseo-cobaltic compounds (Chem. ), an extensive series of complex red compounds of cobalt and ammonia. Modifications of these are the purpureo-cobaltic compounds.

 

COBALTIFEROUS

Co `balt *if "er *ous, a. Etym: [Cobalt + -ferous. ] (Min. )

 

Defn: Containing cobalt.

 

COBALTINE; COBALTITE

COBALTINE; COBALTITE Co "balt *ine, Co "balt *ite n. (Min. )

 

Defn: A mineral of a nearly silver-white color, composed of arsenic, sulphur, and cobalt.

 

COBALTOUS

COBALTOUS Co *balt "ous, a. (Chem. )

 

Defn: Pertaining to, derived from, or containing, cobalt; -- said esp. of cobalt compounds in which the metal has its lower valence. Cobaltous chloride, a crystalline compound, CoCl2, of a pale rose color when hydrous, blue when dehydrated. Its solution is used for a sympathetic ink, the writing being nearly colorless when dried in the air, owing to absorbed moisture, and becoming bright blue when warmed.

 

New American Oxford Dictionary

cobalt

co balt |ˈkōˌbôlt ˈkoʊˌbɔlt | ▶noun the chemical element of atomic number 27, a hard silvery-white magnetic metal. (Symbol: Co ) • short for cobalt blue: [ as modifier ] : a cobalt sky. Cobalt is chiefly obtained as a byproduct from nickel and copper ores. It is a transition metal similar in many respects to nickel. Its main use is as a component of magnetic alloys and those designed for use at high temperatures. DERIVATIVES co bal tic |kōˈbôltik |adjective, co bal tous |kōˈbôltəs |adjective ORIGIN late 17th cent.: from German Kobalt ‘imp, demon ’ (because the presence of cobalt-bearing ore made it more difficult to extract silver, and miners believed that it was harmful to the silver ore with which it occurred ).

 

cobalt blue

co balt blue ▶noun a deep blue pigment containing cobalt and aluminum oxides. • the deep blue color of this.

 

Oxford Dictionary

cobalt

cobalt |ˈkəʊbɔːlt, -ɒlt | ▶noun [ mass noun ] the chemical element of atomic number 27, a hard silvery-white magnetic metal. (Symbol: Co ) • cobalt blue: [ as modifier ] : a cobalt sky. Cobalt is chiefly obtained as a by-product from nickel and copper ores. It is a transition metal similar in many respects to nickel and is mainly used as a component of magnetic alloys and those designed for use at high temperatures. DERIVATIVES cobaltic |kə (ʊ )ˈbɔːltɪk, -ˈbɒlt - |adjective, cobaltous |kə (ʊ )ˈbɔːltəs, -ˈbɒlt - |adjective ORIGIN late 17th cent.: from German Kobalt ‘imp, demon ’ (because the presence of cobalt-bearing ore made it more difficult to extract silver, and miners believed that it was harmful to the silver ore with which it occurred ).

 

cobalt blue

co ¦balt blue ▶noun [ mass noun ] a deep blue pigment containing cobalt and aluminium oxides. • a deep blue colour.

 

Duden Dictionary

Cobaltum

Co bal tum Substantiv, Neutrum , das |Cob a ltum |lateinische Bezeichnung für Kobalt

 

French Dictionary

cobalt

cobalt n. m. nom masculin Symbole Co (s ’écrit sans point ). Métal dur, blanc, brillant.

 

Spanish Dictionary

cobáltico, -ca

cobáltico, -ca adjetivo Del cobalto o relacionado con él :óxido cobáltico .

 

cobalto

cobalto nombre masculino 1 Elemento químico de número atómico 27, masa atómica 58,933 y símbolo Co ; es un metal del grupo de los elementos de transición, de color blanco plateado, magnético y de poca solidez y escasa ductilidad a temperatura normal; se usa en aleaciones, como catalizador y, combinado con el oxígeno, para formar la base de color azul de pinturas y esmaltes :el isótopo cobalto 60 se emplea en radioterapia .2 nombre masculino /adjetivo Color azul que es un poco más oscuro que el azul celeste .También azul cobalto .3 adjetivo Que es de este color . VÉASE azul de cobalto; bomba de cobalto . ETIMOLOGÍA Préstamo (s. xix ) del alemán kobalt , variante de cobold ‘duende ’, por la creencia de los mineros de que un duende les robaba la plata y ponía en su lugar cobalto, considerado de poco valor .

 

cobaltoterapia

cobaltoterapia nombre femenino med Tratamiento médico de algunas enfermedades, en especial tumores malignos, que consiste en la aplicación de la bomba de cobalto y se fundamenta en la acción terapéutica ejercida por las radiaciones beta y gamma emitidas por el cobalto 60 .

 

Sanseido Wisdom Dictionary

cobalt

co balt /kóʊbɔːlt /名詞 U 1 〘化 〙コバルト 〘金属元素; ｟記号 ｠Co 〙.2 コバルト色 (cobalt blue ).