bcc

US /ˌbiːsiːˈsiː/
UK /ˌbiːsiːˈsiː/
"bcc" picture
1.

blind carbon copy: a copy of an email sent to an addressee whose name and address do not appear on the message

:
Please BCC me on all future correspondence.
I sent the email to everyone and used BCC for privacy.
1.

to send a blind carbon copy of an email to (an addressee)

:
Remember to BCC the client on that email.
She decided to BCC her manager on the sensitive message.