Interdisciplinarity refers to a method or mindset that merges traditional educational concepts or methods in order to arrive at a new approaches or solutions. Interdisciplinarity is an increasingly important concept within both academic research and the private sector, as it allows both a rigorous and nimble approach to subjects of both great nuance and complexity.
More than just pasting together different subjects and methods, interdisciplinary work is the process of developing an integration of methods that are traditionally thought of as separate fields (like history, business, or biology). An interdisciplinary student engages in a level of critical inquiry that is unique to other degree paths.
OK, but what does that look like? Here's an excellent example of interdisciplinary work that analyzes a topic while also explaining the process of how to conduct interdisciplinary research.