First, let’s deal with the pronunciation. The `et’ is like the `et’ in `set’, `bet’, and `pet’; the `a’ in `al’ is like the `a’ in `ant’, `apple’, and `hat’. The main stress is on `al’.
`Et al’ comes from Latin and it is the abbreviated form of `et alia’ meaning other people or other things.
The expression is used after a name or a list of names to indicate that others are also involved. It is normally used to refer to books and articles written by more than one person.
*For your next class, I would like you to read the article written by Balagopal et al.