Successively means one after another in order, without interruption. When things happen successively, they follow in sequence, each one coming right after the previous one finishes.

If you score higher on three successive tests, your grades go up each time: first test 85%, second test 90%, third test 95%. Each test builds on the one before. When a basketball team wins five games successively, they win them in a row without any losses in between.

The word emphasizes the unbroken chain. If you read three chapters successively, you read them straight through: chapter one, then chapter two, then chapter three. You don't skip around or take long breaks. Think of dominoes falling successively: each one tips the next in perfect order.

Scientists might test a theory through successive experiments, where each experiment uses what they learned from the previous one. A plant might grow successively taller each week. The key idea is the continuous, step-by-step progression where each step follows naturally from what came before.