Which of the following best defines 'weight' in a medical context?

In a medical context, 'weight' is most accurately defined as a measure of a person's mass. This definition aligns with how weight is commonly quantified in healthcare, as it represents the gravitational force acting on an individual's body mass. Understanding a patient's weight is crucial for various aspects of medical care, including medication dosing, nutrition, and assessing overall health.

Weight is a fundamental metric used in many clinical assessments and can impact treatment decisions, such as determining the appropriate dosages of medications that are based on body weight. It is a critical parameter in calculating body mass index (BMI), which helps evaluate if a person falls within a healthy weight range.

While other options mention different measurements relevant to healthcare—like dosage, health risk assessment, and psychological dependencies—they do not define 'weight' as it pertains to the direct quantification of mass, which is the core interpretation within the medical field.