Illustrated Glossary of Organic Chemistry

Bond dipole: The partial charges assigned to bonded atoms due to differences in electron density caused by electronegativity, inductive effects, and other factors. Indicated with δ+ and δ- and/or the   arrow symbol. The mathematical description of the bond dipole is called the bond dipole moment, which is related to, but not the same as, the dipole moment (or molecular dipole moment).


Symbols indicating the bond dipoles in water.