Tychism

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Tychism \Ty"chism\, n. [Gr. ty`chh fortune, chance + -ism.]
     Any theory which conceives chance as an objective reality;
     esp., a theory of evolution which considers that variation
     may be purely fortuitous.
     [Webster 1913 Suppl.]