The Collaborative International Dictionary of English v.0.48:

Advene \Ad*vene"\, v. i. [L. advenire; ad + venire to come: cf.
   F. avenir, advenir. See Come.]
   To accede, or come (to); to be added to something or become a
   part of it, though not essential. [R.]
   [1913 Webster]

         Where no act of the will advenes as a coefficient.
                                                  --Coleridge.
   [1913 Webster]