The term 'magnitude or degree' can be defined as the EXTENT of something. This is often used to describe the size or intensity of a phenomenon, such as an earthquake or a hurricane. The crossword solution for this term is 'EXTENT, ' which is a six-letter word. EXTENT can refer to the range, scope, or size of something, and it can also refer to the degree or intensity of something. In other words, it is a measure of the magnitude or degree of something.