I looked up the definition of 'light'. > Light was regarded formerly as consisting of material particles, [...] but it is now generally understood to consist [

I looked up the definition of 'light'. > Light was regarded formerly as consisting of material particles, [...] but it is now generally understood to consist [...] in the propagation of vibrations or undulations in a subtile, elastic medium, or ether [...]. Feels like being taken to a different age. In fact the most apparent weakness of such a dictionary is that it doesn't reflect the changes in the language since it was written.