attraction, attractive force - the force by which one object attracts another

covalent bond - a chemical bond that involves sharing a pair of electrons between atoms in a molecule

cross-link, cross-linkage - a side bond that links two adjacent chains of atoms in a complex molecule

hydrogen bond - a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond

electrostatic bond, electrovalent bond, ionic bond - a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion

metallic bond - a chemical bond in which electrons are shared over many nuclei and electronic conduction occurs

peptide bond, peptide linkage - the primary linkage of all protein structures; the chemical bond between the carboxyl groups and amino groups that unites a peptide