{"era":"current","word":"spectrum","meaning":"A band of colors, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction.","children":[{"era":"classical","word":"spectrum","meaning":"an appearance, image, apparition","children":[{"era":"classical","word":"specere","meaning":"to look, to see","children":[{"era":"pre-2500 BCE","word":"*speḱ-","meaning":"to observe","children":[],"language":"Proto-Indo-European"}],"language":"Latin"}],"language":"Latin"}],"language":"Modern English"}