In a memo, the abbreviation XC typically means “extra copy” or “copy circulated”. It is used to indicate that additional copies of the memo have been sent to other individuals who are not the primary recipients.
Example Usage:
- To: John Smith
- From: Jane Doe
- Subject: Project Update
- XC: Sarah Johnson, Michael Lee
Here, “XC” lists the additional people who are receiving a copy of the memo for their information. It serves a similar function to “cc” (carbon copy) in emails.