Noun
English Wikipedia has an article on:process of eliminationWikipedia
process of elimination (plural processes of elimination)
A logical method to identify an entity of interest among several ones by excluding all other entities.
The sculptor produces the beautiful statue by chipping away such parts of the marble block as are not needed - it is a process of elimination. Elbert Hubbard
How do we define consciousness, or what has been called the human soul or the spirit, if it can't be quantified as matter or a particle? ... it can be quantified or observed just by a process of elimination. Vanna Bonta
The object of this process of elimination is. J. R. Partington
Very often I'll find out at the end of a book what I put in at the beginning. A sort of process of elimination and discovery in one. Jonathan Carroll