what does cc stand for

The abbreviation "cc" stands for "carbon copy." Originally, it referred to making a copy of a written document using carbon paper before photocopiers existed. In the context of email, "cc" means sending a copy of the email to someone apart from the primary recipient(s), allowing others to be kept informed of the message. All recipients, including those in the "To" and "cc" fields, can see the email addresses of each other. This term has its origins in the practice of making physical carbon copies of letters and has been carried over into digital communication.