medium

US /ˈmiː.di.əm/
UK /ˈmiː.di.əm/
"medium" picture
1.

a means by which something is communicated or expressed

:
Television is a powerful medium for advertising.
Painting is her preferred artistic medium.
2.

a person thought to have the power to communicate with the spirits of the dead

:
She visited a spiritual medium to contact her deceased grandmother.
The medium claimed to receive messages from the other side.
1.

in the middle of a range of possible sizes, amounts, or qualities; average

:
I prefer my steak cooked medium.
She wears a medium-sized shirt.