Metabolization appears in the depth-psychology corpus primarily as an analogical and procedural concept borrowed from biochemistry and transferred into the vocabulary of psychic transformation. The term designates the psyche’s capacity to take in raw, undigested material—whether traumatic affect, archetypal energy, unconscious content, or somatic activation—and convert it into forms that can be integrated, utilized, or consciously borne. The corpus does not develop a single unified theory of psychic metabolization; rather, the concept surfaces across several distinct registers. In the somatic and trauma literature (Ogden), metabolization is grounded in the body’s literal chemistry—oxygen, nutrients, cellular conversion—providing a physiological substrate for the metaphor. In the alchemical tradition as read by Edinger and Hillman, the alchemical operations of calcinatio, solutio, putrefactio, and sublimatio function as symbolic equivalents of metabolic stages: dissolution, digestion, purification, and reconstitution. In object-relations contexts (Kalsched’s reading of Klein and Bion), the question of metabolization becomes one of whether the psyche can tolerate and process persecutory anxiety or must instead eject it via projective identification. The tension across these positions is whether metabolization is primarily a somatic, symbolic, or relational process—a question the corpus holds open rather than resolves.