'Solipsism' definitions:

Definition of 'solipsism'

From: WordNet
noun
(philosophy) the philosophical theory that the self is all that you know to exist

Definition of 'Solipsism'

From: GCIDE
  • Solipsism \So*lip"sism\, n. [L. solus alone + ipse self.]
  • 1. (Ethics) Egotism. --Krauth-Fleming. [1913 Webster]
  • 2. (Metaph.) Egoism. --Krauth-Fleming. [1913 Webster]