1. A well-founded field of study or area of knowledge with recognized methods, standards, and practitioners
Physics is an established discipline with centuries of research and methodology.
A Física é uma disciplina estabelecida com séculos de pesquisa e metodologia.
2. A system of rules and procedures that has been institutionalized and widely accepted
Military drill is an established discipline that ensures order and coordination.
O treinamento militar é uma disciplina estabelecida que garante ordem e coordenação.