The phrase "approach was defined" is correct and usable in written English.
It can be used when discussing a specific method or strategy that has been clearly outlined or established in a particular context.
Example: "In the study, the approach was defined to ensure consistency in data collection and analysis."
Alternatives: "method was established" or "strategy was outlined."
Since 1990, when the approach was defined in John Carroll's The Nurnberg Funnel, much work has been done to apply, refine, and broaden the minimalist approach to technical communication.
The ESF studied in the third approach was defined as the Peak of the Twenty-five Milli Second moving Average (PTMSA).
The ESF in the first (stiffness-based) approach was defined as the static force producing the same maximum displacement that is produced by a vehicle collision at the point of impact.
The approach was defined so that it reduced individual bias in the computational models and enhanced participant-independent recognition of symptoms of stress.
The User-centered design approach was defined more than 30 years ago [4] and it consists in designing and developing applications or products where a team of designers focuses on users' needs in an iterative way.
Such an approach was defined as primary because it was deemed in line with the requirements of the most stringent regulatory authorities.
A composite performance and availability modeling approach is defined considering various causes of service unavailability.
Such approach is defined as high-performance BEM, which will be a new research field in future.
Flood safety levels based on the Three Points Approach are defined as the functional unit to ensure comparability between systems.
At bottom, China's economic approach is defined by carefully controlled reform, a strategy once described by the late Communist Party patriarch Chen Yun as "crossing the river by feeling for the stones".
Ecosistema urbano's approach is defined as urban social design, by which they understand the design of environments, spaces and dynamics in order to improve the self-organization of citizens, social interaction within communities and their relationship with the environment.
