A posteriori

"A posteriori" is a Latin term used in philosophy and science to describe knowledge that is gained through experience or observation. This means that you learn something after you see or experience it, rather than just thinking about it or relying on theoretical reasoning alone. For example, knowing that it rains in a specific city because you have lived there and observed the weather is a posteriori knowledge. This contrasts with "a priori" knowledge, which is based on reasoning or logical deduction rather than empirical experience.