What is described as 'partial evidence given by a witness'?

The term "partial evidence given by a witness" is best aligned with the concept of indirect evidence. Indirect evidence does not directly prove a fact but instead supports an inference that could lead to the conclusion of the fact in question. This type of evidence typically relies on circumstantial elements that may suggest a conclusion but require additional context or support to substantiate the claim entirely.

In a legal or surveying context, indirect evidence could be presented through witness testimony that does not capture the entire picture but rather provides pieces that, when combined with other information, lead to a reasonable inference or assertion about the matter at hand. For instance, a witness might recall seeing equipment at a location, which indirectly suggests the existence of an operation or activity relevant to the case under scrutiny but does not definitively establish it alone.

In contrast, primary evidence refers to direct, original sources of information such as documents or objects, while direct evidence specifically addresses the facts in dispute. Indispensable evidence usually refers to evidence that is critical to a case and cannot be overlooked. Hence, the nuances of indirect evidence make it the appropriate choice for describing the situation of "partial evidence given by a witness."