The term 'Wavy Math Function' is a reference to the SINE function, which is a mathematical function used to describe a smooth, repetitive wave-like pattern. The SINE function is represented by the equation y = sin(x), where x is the independent variable and y is the dependent variable. The SINE function is used in many areas of mathematics, including calculus, trigonometry, and geometry. It is also used in physics, engineering, and other sciences. The SINE function is an important tool for understanding and predicting the behavior of waves, such as sound and light waves.