The term 'PART OF AN EMAIL ADDRESS' can be summarized as the three letter symbol 'DOT' which is used to separate the different components of an email address. This symbol is used to separate the username from the domain name, and the domain name from the top-level domain. For EXAMPLE, in the email address 'EXAMPLE@example.com', the 'DOT' separates the username 'EXAMPLE' from the domain name 'EXAMPLE' and the top-level domain '.com'.