1. A graphical representation, similar to a bar chart in structure, that organizes a group of data points into user-specified ranges. The histogram condenses a data series into an easily interpreted visual by taking many data points and grouping them into logical ranges or bins.
  2. The MACD histogram is a very common technical indicator that illustrates the difference between the MACD line and the trigger line. This difference is then plotted on a chart in the form of a histogram to make it easy for a trader to determine a specific asset's momentum.