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.
In the phenomena of the material world, and in
many of the phenomena of mind.
Stewart.
2. That which strikes one as strange, unusual,
or unaccountable; an extraordinary or very remarkable person, thing,
or occurrence; as, a musical phenomenon.