“Our understanding thus acquires a kind of negative extension, that is, it is not limited by sensibility, but, on the contrary, it limits sensibility, by calling things in themselves (not considered as appearances) noumena.”
~ From Critique of Pure Reason by Immanuel Kant
Kant made a distinction between the world in itself (the noumena world) and the world of our experience (the phenomenal world).
Noumenon: what is.
A phenomenon is that which is observed. A noumenon is that which is.
“Noumena” is plural, with “Noumenon” as the corresponding singular and the expression “noumenal world” for the world of noumena.
This is the world undistorted by human ideas and concepts.
Welcome To Noumena Holdings LLC. We want you to bring your ideas and concepts undistorted into this human perceptual world and thereby creating a phenomenon.