You searched for: “archecentric
archecentric (adjective), more archecentric, most archecentric
1. The original model from which later things evolved or developed: Alfred Hitchcock's Psycho is considered to be an archecentric film, or the basis for many horror films that were developed later.
2. In ornithology, pertaining to the simple kind of intestine: Jane wondered if birds still had archecentric body parts, or if such parts developed over time.