phenomenal (adj)

of or relating to a phenomenon

"phenomenal science"

phenomenal (adj)

exceedingly or unbelievably great

"the bomb did fantastic damage"; "Samson is supposed to have had fantastic strength"; "phenomenaRl feats of memory"

phenomenal (Adjective)

Very remarkable; highly extraordinary; amazing.

phenomenal (Adjective)

Perceptible by the senses through immediate experience.

phenomenal (Adjective)

Of or pertaining to the appearance of the world, as opposed to the ultimate nature of the world as it is in itself.

Phenomenal

A phenomenon (PL: phenomena) is an observable event. The term came into its modern philosophical usage through Immanuel Kant, who contrasted it with the noumenon, which cannot be directly observed. Kant was heavily influenced by Gottfried Wilhelm Leibniz in this part of his philosophy, in which phenomenon and noumenon serve as interrelated technical terms. Far predating this, the ancient Greek Pyrrhonist philosopher Sextus Empiricus also used phenomenon and noumenon as interrelated technical terms.