Liquidology is the science of Liquidity assembled from different fields of knowledge and from dozens of scientists and contributors by Marc René Deschenaux.

Liquidity is not only a polysemic term, but also an ambiguous one due to its popular acception meaning cash.

In finance, it mainly refers to the efficiency or ease with which a market, a physical person or an entity can execute a transaction.

In a time where the public is attracted to markets of cryptocurrencies, tokens and coins, it is more important than ever because most of the world still does not accept anything but fiat currencies.

The financial liquidity ratio determines capacity of a person to be a counterpart to a buy or sell transaction initiated by a trader.

Market liquidity ratio determines capacity of said market to be a counterpart to a buy or sell transaction initiated by a trader.