| the bond formed by the sharing of a pair of electrons by two atoms. |

| covalent bond n. A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms. |
A chemical bond in which two atoms share some of their valence electrons, thereby creating a force that holds the atoms together.
Note: Many molecules in living systems are held together by covalent bonds.
covalent bond n.
A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms.