The term 'EMAIL ADDRESS PUNCTUATION' refers to the punctuation marks used in email addresses. The most common punctuation mark used is the dot (.), which is used to separate the username from the domain name. For example, in the email address john.doe@example.com, the dot separates the username (john.doe) from the domain name (example.com). Other punctuation marks that may be used in an email address include the at sign (@), the hyphen (-), and the underscore (_). These punctuation marks are used to create a unique email address that can be used to send and receive emails.