A more thorough explanation:

Definition: A bond issue is a class or series of securities that are offered for sale at the same time. It can also refer to the act of officially putting forth or distributing these securities.

Example: A company may decide to issue bonds to raise money for a new project. They will offer these bonds for sale to investors, who will then receive interest payments and eventually get their initial investment back. The bond issue refers to the entire set of bonds being offered.

This example illustrates the definition of a bond issue as a class or series of securities being offered for sale. The company is putting forth these bonds to raise money, and investors can purchase them as a way to earn interest and potentially make a profit.