Nascence means being born or coming into existence for the first time. The nascence of a business idea is very exciting for an entrepreneur.
The noun nascence is commonly used to talk about the development of something new, or the emerging of great potential. During its nascence, not many people had any idea what the Internet would look like in a few years. It's impossible to remember anything about your own nascence, although your parents may tell you stories about it. The Latin root is nascentem, "arising young, or immature," from nasci, "to be born."