No, white is not considered a spectrum. In the context of light, white is actually the combination of all visible wavelengths of light. The spectrum refers to the range of colors that can be seen when light is dispersed or separated, such as when passing through a prism. This spectrum typically consists of colors like red, orange, yellow, green, blue, indigo, and violet, commonly known as the colors of the rainbow. When all these colors are combined at equal intensity, they appear as white light. So while white light contains all the colors of the spectrum, it is not itself a part of the spectrum.