To "cc" someone in an email means to send them a "carbon copy" of the email in addition to the primary recipient(s). The term comes from the days of typewriters and carbon paper, which was used to make duplicate copies of documents. In modern email usage, putting someone in the cc field means they receive a copy of the message for their information, but they are not the main recipient and usually not expected to respond. Everyone receiving the email can see who is cc'd, making it a transparent way to keep others informed without directly involving them in the conversation. Key points about cc in emails:

• Stands for Carbon Copy.
• Sends a copy to someone besides the primary recipient.
• Used to keep people informed.
• Recipients see who else is cc'd.
• Usually, cc'd people are not required to reply.

This is distinct from "bcc" (blind carbon copy), where recipients receive the email copy discreetly without others seeing their address.