Definition of "phenomenon" in English

noun

1. A thing or being, event or process, perceptible through senses; or a fact or occurrence thereof.

2. (by extension) A knowable thing or event (e.g. by inference, especially in science).

   • An electromagnetic phenomenon.

3. A kind or type of phenomenon (sense 1 or 2).

   • A volcanic eruption is an impressive phenomenon.

4. Appearance; a perceptible aspect of something that is mutable.

5. A fact or event considered very unusual, curious, or astonishing by those who witness it.

6. A wonderful or very remarkable person or thing.

7. (philosophy, chiefly Kantian idealism) An experienced object whose constitution reflects the order and conceptual structure imposed upon it by the human mind (especially by the powers of perception and understanding).