Early quantum mechanics can, in a precise sense, be read as a theory of time. A Lorentz transformation turns spatially homogeneous proper periodicity into a spacetime phase wave; de Broglie’s relation between rest energy and proper frequency then yields λ=h/p, while global phase consistency leads to the quantization of closed structures. This derivation motivates the concept of event latency: the wave function describes not the instantaneous ontic state of a persisting object, but the organization of possible events in terms of amplitude and phase. This paper explicitly addresses the previously omitted passage from physical process to wave function and formulates it as chronomorphic reduction. Chronomorphic reduction is the controlled local representation of a process by a chromogent χ=A exp" " (iS/ℏ). Semiclassical analysis provides a controlled formal realization of this scheme: the eikonal and transport equations determine phase and amplitude, symbol calculus reproduces physical parameters, and the quasimode argument establishes the concentration of the reduced representative within the corresponding spectral region. A manifest event establishes a new process boundary; projection is interpreted as conditioned chronomorphic re-reduction. Quantum-like character thus denotes the capacity for a controlled representation of temporally organized event latency, rather than a class of objects distinguished by size. Keywords: temporal wave; event latency; chronomorphic reduction; chromogent; semiclassical analysis; phase closure; operators; projection