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.
FAQs. A CREST Depository Interest (CDI) is a UK security that represents a stock traded on an exchange outside the UK. They offer a straightforward, cost-effective way to trade in a number of overseas stocks and are the main means of foreign dealing provided by a number of UK international stock brokers.lthough the structure of the CDI means that the underlying stock is held in the name of CREST rather than in your name being on the register of shareholders, the same is true for most share ownership today.