Metallid on lihtained, mis (kompaktses olekus) läigivad iseloomulikult, juhivad hästi soojust ja elektrit ning on enamasti hästi sepistatavad.
a general term characterizing certain elements, e.g. gold, silver, copper, mercury, sodium, which have a characteristic lustrous appearance, which are good conductors of heat and electricity, and generally enter chemical reactions as positive ions, or cations