(Forgive my lack of accurate wording, English is not my first language, in addition I'm not a philosophy expert.)
I cannot recall the word I have seen once, describing a theory where human understanding is based on experience, and therefore is limited by the horizon of what is conceivable based on this experience.
For instance, we are used to see objects always enclosed in something else, there is an inside and an outside. We have some difficulty to understand what is the meaning of the Universe where there is no "outside", a Universe having no limit or end. We (non experts) may have more difficulty with multi-verse concept (what is the meaning of something that exists but we cannot interact with and therefore cannot detect in any way). Etc.
Said otherwise: human being may be unable to get the concept of extreme otherness due to limitation of thinking process, because we are used to think and validate assumptions based on what we already know (logic).
Somehow related discussion.
What is the scientific word for this concept? Can you provide links to texts or definition?