What is the meaning of the term "measure" in music and how is it used to quantify and structure musical compositions?

In music, "measure" refers to a segment of time that contains a specific number of beats. It is used to organize and structure musical compositions by dividing them into equal parts, providing a framework for rhythm and timing. Each measure typically has a set number of beats, indicated by a time signature, which helps musicians keep track of the music's timing and phrasing.