Definitions

1. adverb

occurring or known after the fact; based on observation or experience

“The theory was developed a posteriori, relying on data collected from the experiment.”

2. adverb

occurring or situated at the back or rear

“The posteriori part of the body was injured in the accident.”

3. noun

the method of reasoning or knowledge acquired by experience or observation

“The philosopher’s a posteriori approach to understanding the universe was influential in the field.”

4. noun

the part of a body situated at the back or rear

“The posteriori portion of the spine was affected by the injury.”