A priori and a posteriori are terms that are used especially in logic and philosophy. A priori is from Latin ā priōrī, which means literally, "from what is earlier."

A PRIORI definition: 1. relating to an argument that suggests the probable effects of a known cause, or using general…. Learn more.

A priori is a term applied to knowledge considered to be true without being based on previous experience or observation. In this sense, a priori describes knowledge that requires no evidence.

“A priori” and “a posteriori” refer primarily to how, or on what basis, a proposition might be known. In general terms, a proposition is knowable a priori if it is knowable independently of experience, while …

Sep 8, 2024 · A priori is a term derived from Latin, commonly used in philosophy and logic, which means “from the earlier” or “from the beginning.” It refers to knowledge that is gained independently of, or …

An a priori argument, reason, or probability is based on an assumed principle or fact, rather than on actual observed facts. In the absence of such evidence, there is no a priori hypothesis to work with. …

Dec 11, 2025 · In summary, while a priori arguments are rooted in reason and deduction, a posteriori arguments are grounded in empirical observation and verification. Understanding these distinctions …

Dec 9, 2007 · Roughly speaking, a priori justification provides reasons for thinking a proposition is true that comes from merely understanding, or thinking about, that proposition. In contrast, a posteriori …

A priori knowledge refers to information or truths that are independent of experience and can be known or justified without relying on empirical evidence. It is a fundamental concept in epistemology, the …

In Latin a priori means “what comes first.” A priori understandings are the assumptions that come before the rest of the assessment, argument, or analysis.