Definition of At or Better: At or Better is a term used while issuing instructions to the Forex broker, market maker or a dealer regarding the purchase that he should make at a particular rate. This helps the broker or the dealer to attain the highest value at a specific time period. Your dealer or broker may have different types of requirements that can be linked with any lessons offered by you. It is necessary to understand the things carefully so that a dealer can earn maximum profit. Most of the dealers use abbreviations for their names so that communications becomes easy and no misunderstanding takes place.