1. Legally or officially acceptable:
* This is the most common meaning of "valid." It applies to things like documents, licenses, contracts, and arguments. For example, a valid passport allows you to travel internationally.
2. Based on sound reasoning or evidence:
* This definition refers to ideas, claims, and arguments. A valid argument is one that is logically sound and supported by evidence. For example, a scientific study with strong methodology could be considered a valid source of information.
3. Effective or producing the desired result:
* This meaning applies to actions, methods, or strategies. A valid strategy is one that works effectively to achieve a specific goal. For example, a valid solution to a problem is one that actually solves the problem.
4. Having legal force or effect:
* This meaning is similar to the first definition, but it emphasizes the legal consequences of something being valid. For example, a valid contract creates legally binding obligations.
In essence, "valid" signifies something that is recognized as genuine, correct, and worthy of consideration.