starting
n. uncountablen. the beginning of something. You use it to talk about the point in time or space where an event or journey begins.
n. the point in time or space at which something has its origin or commencement.
The starting of the race is at ten o'clock.
The starting of the project was delayed by several weeks due to a lack of funding and staff.
The sudden starting of the engine broke the silence of the valley, echoing off the surrounding cliffs and alerting the nearby wildlife to our presence.
Often functions as a gerund; when used as a pure noun, it is frequently replaced by 'start' in modern English.
at the starting of the bookat the start of the bookWhile 'starting' is a valid noun, 'start' is the standard choice for referring to the beginning of a physical or temporal object.