The first funding round for a startup. "Series A", "Series B", etc.
(… although there are sometimes "seed" rounds that precede a series A, or even pre-seed rounds … like everything else, it's complicated & messy. But hopefully you see the metaphor the parent was trying to paint.)
(… although there are sometimes "seed" rounds that precede a series A, or even pre-seed rounds … like everything else, it's complicated & messy. But hopefully you see the metaphor the parent was trying to paint.)