To call on

To make a short visit to; as, call on a friend.
- Marryat.
To appeal to; to invite; to request earnestly; as, to call upon a person to make a speech.
To solicit payment, or make a demand, of a debt.
To invoke or play to; to worship; as, to call upon God.

See also: Call, Call, Call, Call

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
"Alzheimer's Society does important work and more and more people are likely going to need to call on their services in the future.