Final answer:
An event that occurs by reaching a point in time is called a temporal event, as the term 'temporal' directly relates to the aspect of time.
Step-by-step explanation:
An event that occurs by reaching a point in time is called a temporal event. The term 'temporal' refers to something related to or limited by time. In physics, particularly when discussing the nature of spacetime and events, it's important to recognize that time is a dimension just like the three spatial dimensions. Just as we can locate a point in space using three coordinates, we similarly determine an event in time using the temporal coordinate.
Considering time, events can be defined by their position in time - the when aspect - just as much as by their position in space. The temporal nature of an event is evident when we consider how we measure elapsed time, such as using a stopwatch that we start and stop at specific moments to capture the duration of an event. The concept is used not just in physics but across various subjects where timing and coordination are critical. For instance, specific events in biology need to happen at precise times for the normal development of an organism.