ABD: All But Dissertation
Hanson, J., Loose, W., & Reveles, U. (2022). A qualitative case study of all-but-dissertation students at risk for dissertation noncompletion: A new model for supporting candidates to doctoral completion. Journal of College Student Retention: Research, Theory & Practice, 24(1), 234–262. https://doi.org/10.1177/1521025120910714
This article discussed the idea of ABD (which is not a degree).