'Phenomenon' definitions:

Definition of 'phenomenon'

From: WordNet
noun
Any state or process known through the senses rather than by intuition or reasoning
noun
A remarkable development

Definition of 'Phenomenon'

From: GCIDE
  • Phenomenon \Phe*nom"e*non\, n.; pl. Phenomena. [L. phaenomenon, Gr. faino`menon, fr. fai`nesqai to appear, fai`nein to show. See Phantom.]
  • 1. An appearance; anything visible; whatever, in matter or spirit, is apparent to, or is apprehended by, observation; as, the phenomena of heat, light, or electricity; phenomena of imagination or memory. [1913 Webster]
  • In the phenomena of the material world, and in many of the phenomena of mind. --Stewart. [1913 Webster]
  • 2. That which strikes one as strange, unusual, or unaccountable; an extraordinary or very remarkable person, thing, or occurrence; as, a musical phenomenon. [1913 Webster]