What does mean in musical terms?

The crescendo symbol is a musical notation that means to gradually increase the volume of a piece of music. It is typically indicated by a symbol that looks like an open V, with the left side of the V at the bottom. The crescendo symbol can be used to indicate a gradual increase in volume over a long period of time, or to indicate a sudden increase in volume.

Here is an example of how a crescendo symbol can be used in music notation:

```

| C | D | E | F | G | A | B | C |

|----|----|----|----|----|----|----|----|

| | | cresc. | | | | | |

```

In this example, the crescendo symbol is placed above the notes E, F, and G. This means that the volume of the music should gradually increase as the notes E, F, and G are played.

The crescendo symbol can be used with any type of musical instrument, and it can be used in any genre of music. It is a versatile notation that can be used to create a variety of musical effects.