SIPOC - is a tabular tool that provides a very high level view (commonly called as 30000 feet view) of the process. It is an acronym standing for Supplier, Input, Process, Output and Customer. These form the five columns in a SIPOC. Suppliers provides the inputs, which are processed (in process) to produce the outputs for the customers. Since it provides the complete view of a process (from supplier to customer), it is also sometimes called as a 'wing-to-wing' map.
A related term is COPIS (Customer, Output, Process, Input, Supplier) in which the order is reversed.
An application oriented question on the topic along with responses can be seen below. The best answer was provided by Mohan PB on 26th September 2017.