Definition of allowance for English Language Learners. : 1  an amount of money that is given to someone regularly or for a specific purpose. : 2  a small amount of money that is regularly given to children by their parents. : 3  an amount of something (such as time) that is allowed or available.
category development index (CDI) Category development index (CDI) is an index that is calculated by taking the percentage of a product categoryâs total sales that occur in a given market area as compared to the percentage of the total population in the market.
A: The relative strength index (RSI) is most commonly used to indicate temporary overbought or oversold conditions in a market. An intraday forex trading strategy can be devised to take advantage of indications from the RSI that a market is overextended and therefore likely to retrace.