What is radix value?

Could you elaborate on the concept of radix value? I've heard this term mentioned in relation to number systems, but I'm not entirely clear on its significance. Could you break it down simply? Is radix value the base in which a number is represented, for instance, the 10 in decimal or the 2 in binary? And how does it affect the interpretation and manipulation of numbers? I'd appreciate a concise yet thorough explanation to help me grasp this fundamental concept.