Atomic Continuum Ontology Partial Closure and the Higher-Resolution Ontology of the Quantum Domain

Quantum theory has long combined extraordinary formal success with persistent ontological instability.Rather than treating the central paradoxes of quantum theory as evidence that reality is intrinsicallyirrational, this paper argues that the deeper difficulty lies in ontological resolution. To address this, it Iintroduces Atomic Continuum Ontology (ACO) as the proper regime of the quantum domain: a lawful band of partial closure in which continuum relationality and atomic realization coexist. Within this framework, wave-particle duality is reinterpreted as dual-aspect expression within one partially closedregime; superposition becomes partial-closure multiplicity; entanglement becomes relationalpersistence or incomplete atomic separation; collapse becomes closure deepening; and measurementbecomes closure selection culminating in AO stabilization. Quantum field theory is regrounded as theeffective formal grammar of ACO, while the quantum vacuum is reinterpreted as a CO-ACO groundrather than as empty nothingness. The paper further argues that ACO outperforms Copenhagen, Many- Worlds, and primitive ontology readings by identifying the missing intermediate regime that each partly apprehends yet fails to articulate. A minimal mathematical appendix provides a seed formal schema based on a closure parameter, threshold stabilization, and realization channels. The overall claim is that quantum theory did not discover a world beyond ontology; it discovered a world whose intermediate ontology it lacked the lens to name. Keywords: Atomic Continuum Ontology; partial closure; quantum foundations; quantum field theory;vacuum ontology; measurement problem; entanglement; superposition; closure deepening; metainterpretation.