Title: Medium of exchange
Content:  In economics, a medium of exchange is any item that is widely acceptable in exchange for goods and services. In modern economies, the most commonly used medium of exchange is currency. The origin of "mediums of exchange" in human societies is assumed to have arisen in antiquity as awareness grew of the limitations of barter. The form of the "medium of exchange" follows that of a token, which has been further refined as money. A "medium of exchange" is considered one of the functions of money. The exchange acts as an intermediary instrument as the use can be to acquire any good or service and avoids the limitations of barter; where what one wants has to be matched with what the other has to offer. Most forms of money are categorised as mediums of exchange including commodity money, representative money, cryptocurrency and most commonly fiat money. Representative and fiat money most widely exist in digital form as well as physical tokens, for example coins and notes.
Title: Money
Content:  When money is used to intermediate the exchange of goods and services, it is performing a function as a medium of exchange. It thereby avoids the inefficiencies of a barter system, such as the inability to permanently ensure "coincidence of wants". For example, between two parties in a barter system, one party may not have or make the item that the other wants, indicating the non-existence of the coincidence of wants. Having a medium of exchange can alleviate this issue because the former can have the freedom to spend time on other items, instead of being burdened to only serve the needs of the latter. Meanwhile, the latter can use the medium of exchange to seek for a party that can provide them with the item they want.
Title: Medium of exchange
Content:  A barter transaction typically happens on the spot or over a short period of time. Money, on the other hand, also functions as a store of value, until what is wanted becomes available.
Title: Medium of exchange
Content: 1) Value common assets ; 2) Common and accessible ; 3) Constant utility ; 4) Low cost of preservation ; 5) Transportability ; 6) Divisibility ; 7) High market value in relation to volume and weight ; 8) Recognisability ; 9) Resistance to counterfeiting Fiat currencies function as money with "no intrinsic value" but rather exchange values which facilitate a measurable value of exchange. The market measures or sets the real value of various goods and services using the medium of exchange as a unit of measure i.e., standard or the yard stick of measurement of wealth. There is no other alternative to the mechanism used 
Title: Near money
Content:  Money's most important function is as a medium of exchange to facilitate transactions. Without money, all transactions would have to be conducted by barter, which involves direct exchange of one good or service for another.
Title: Medium of exchange
Content:  A barter market theoretically requires a value being known of every commodity, which is both impractical to arrange and impractical to maintain. If all exchanges go 'through' an intermediate medium, such as money, then goods can be priced in terms of that one medium. The medium of exchange therefore allows the relative values of items in the marketplace to be set and adjusted with ease. This is a dimension of the modern fiat money system referred to as a "unit of account"
Title: Medium of exchange
Content:  An ideal medium of exchange is spread throughout the marketplace to allow individuals with exchange potential to buy and sell. When money serves the function of a store of value, as fiat money does, there are conflicting drivers of monetary policy. This is because a store of value can become more valuable if it is scarce in the marketplace. When the medium of exchange is scarce, traders will pay to rent it (interest), which acts as an impedance to trade. In stable or deflationary environments, interest is a net transfer of wealth from debtor to creditor with the opposite transfer under inflationary environments.
Title: Medium of exchange
Content:  long as that state produces anything of value to others, the medium of exchange has some value, and the currency may also be useful as a standard of deferred payment among others. Of all functions of money, the medium of exchange function has historically been the most problematic due to counterfeiting, the systematic and deliberate creation of bad money with no authorization to do so, leading to the driving out of the good money entirely. Other functions rely not on recognition of some token or weight of metal in a marketplace, where time to detect any counterfeit is limited and benefits for successful passing-off are high, but on more stable long term 
Title: Money
Content:  of money's functions, some arguing that they need more separation and that a single unit is insufficient to deal with them all. One of these arguments is that the role of money as a medium of exchange conflicts with its role as a store of value: its role as a store of value requires holding it without spending, whereas its role as a medium of exchange requires it to circulate. Others argue that storing of value is just deferral of the exchange, but does not diminish the fact that money is a medium of exchange that can be transported both across space and time. The term "financial capital" is a more general and inclusive term for all liquid instruments, whether or not they are a uniformly recognized tender.
Title: Medium of exchange
Content:  A barter transaction requires that both objects being bartered be of equivalent value. A medium of exchange is able to be subdivided into small enough units to approximate the value of any good or service.

Question: what is money as a medium of exchange?
Answer: fiat money.