Interdisciplinary is defined as the combination of two or more disciplines to a new level of integration1. In healthcare, this is used to create a patient centered team of various disciplines who collaborate to improve the patient care and efficiency of the treatment plan. Interdisciplinary teams are also used in research settings, especially in healthcare research. This consists of a team of researchers from various disciplines working together to improve a research project and tackle the problems from several different angles.
1 https://www.merriam-webster.com/dictionary/interdisciplinary
Discipline: a specific branch of knowledge
Multidisciplinary: different disciplines working together, each drawing on their disciplinary knowledge
Interdisciplinary: integrating knowledge and methods from different disciplines, using a real synthesis of approaches
Transdisciplinary: creating a unity of intellectual frameworks beyond the disciplinary perspectives
Definitions from: https://www.arj.no/2012/03/12/disciplinarities-2/