|to remove impurities from a gas by chemical means, as sulfur dioxide from smokestack gas or carbon dioxide from exhaled air in life-support packs|
|any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals|
|1.||a brittle bluish-white metallic element that becomes coated with a corrosion-resistant layer in moist air and occurs chiefly in sphalerite and smithsonite. It is a constituent of several alloys, esp brass and nickel-silver, and is used in die-casting, galvanizing metals, and in battery electrodes. Symbol: Zn; atomic no: 30; atomic wt: 65.39; valency: 2; relative density: 7.133; melting pt: 419.58°C; boiling pt: 907°C|
|2.||informal corrugated galvanized iron|
|[C17: from German Zink, perhaps from Zinke prong, from its jagged appearance in the furnace]|
A metallic element that is brittle at room temperature but becomes malleable when heated. Atomic number 30; atomic weight 65.39; melting point 419.5°C; boiling point 907°C; specific gravity 7.133 (25°C); valence 2.
|zinc (zĭngk) Pronunciation Key
A shiny, bluish-white metallic element that is brittle at room temperature but is malleable when heated. It is used in alloys such as brass and bronze, as a coating for iron and steel, and in various household objects. Zinc is essential to human and animal growth. Atomic number 30; atomic weight 65.39; melting point 419.4°C; boiling point 907°C; specific gravity 7.133 (25°C); valence 2. See Periodic Table.