metallic bond

noun Chemistry.
the type of chemical bond between atoms in a metallic element, formed by the valence electrons moving freely through the metal lattice.
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Collins
World English Dictionary
metallic bond
 
n
chem the covalent bonding between atoms in metals, in which the valence electrons are free to move through the crystal

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
metallic bond  
The chemical bonding that holds the atoms of a metal together. Metallic bonds are formed from the attraction between mobile electrons and fixed, positively charged metallic atoms. Whereas most chemical bonds are localized between specific neighboring atoms, metallic bonds extend over the entire molecular structure.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

metallic bond

force that holds atoms together in a metallic substance. Such a solid consists of closely packed atoms. In most cases, the outermost electron shell of each of the metal atoms overlaps with a large number of neighbouring atoms. As a consequence, the valence electrons continually move from one atom to another and are not associated with any specific pair of atoms. In short, the valence electrons in metals, unlike those in covalently bonded substances, are nonlocalized, capable of wandering relatively freely throughout the entire crystal. The atoms that the electrons leave behind become positive ions, and the interaction between such ions and valence electrons gives rise to the cohesive or binding force that holds the metallic crystal together.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Bonding results from the intimate contact produced by the metallic bond formed between the substrate metal and the solder alloy.
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