plural phenomena a : an object or aspect known through the senses rather than by thought or intuition b : a temporal or spatiotemporal object of sensory experience as distinguished from a noumenon c : a fact or event of scientific interest susceptible to scientific description and explanation

In science, the word phenomenon is typically used to refer to anything that occurs naturally and can be observed, such as a weather phenomenon or a cosmic phenomenon. In philosophy, it’s used more broadly to refer to an object of perception or experience.

plural phenomena /-ənə/ /fɪ ˈnɑːmənə/ : something (such as an interesting fact or event) that can be observed and studied and that typically is unusual or difficult to understand or explain fully