The linkage or force holding two neighboring atoms of a molecule in place and resisting their separation, usually accomplished by the transfer or sharing of one or more electrons or pairs of electrons between the atoms.
A force of attraction that holds atoms or ions together in a molecule or crystal. Bonds are usually created by a transfer or sharing of one or more electrons. There are single, double, and triple bonds. See also coordinate bond, covalent bond, ionic bond, metallic bond, polar bond.
A security issued by a corporation or public body and usually carrying a fixed rate of interest and a set date, called the bond's maturity, for redemption of the principal. Like a stock, a bond is a type of investment, but unlike a stock, a bond has a definite, but not necessarily fixed, yield. Some bonds have a feature known as a call, which gives the borrower an option to pay off the principal of the bond before its maturity, the date when the bond is due to be redeemed. (See municipal bonds and Treasury bills.)