|Photo by Nico Aguilera.|
which was coined in 1992 by literary critic Constance Rook as a companion to the more familiar term Bildungsroman.
Bildungsroman refers to stories where the protagonist is coming of age, growing, developing or "building" towards adulthood.
One of the most classic examples is Mark Twain's The Adventures of Huckleberry Finn.
A Vollendungsroman. . . is a novel of winding down or completion. It focuses on the challenges presented in late life, chiefly to "discover the tension between affirmation and regret." (Rook qtd. in footnote 49 of Rita Caviagoli's Women of a Certain Age, on p. 203)