Burst open is a term that can be described in three different ways. The first is 'POP', which is a sound made when something suddenly breaks or bursts open. The second is 'DEHISCE', which is the process of splitting open along a natural line, such as a seed pod. The third is 'ERUPT', which is when something bursts open with great force, often accompanied by a loud noise. All three terms describe the same action of something bursting open.