phenomenon | Etymology, origin and meaning of phenomenon ...
https://www.etymonline.com/word/phenomenonphenomenon (n.) 1570s, "a fact directly observed, a thing that appears or is perceived, an occurrence," especially a regular kind of fact observed on certain kinds of occasions, from Late Latin phænomenon, from Greek phainomenon "that which appears or is seen," noun use of neuter present participle of phainesthai "to appear," passive of phainein "bring to light, cause to …
Phenomenon - Wikipedia
https://en.wikipedia.org/wiki/PhenomenonA phenomenon (Greek: φαινόμενον, romanized: phainómenon, lit. 'thing appearing to view'; plural phenomena) is an observable fact or 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 Leibnizin this part of his philosophy, in which phenomenon a…