A Functional Reinterpretation of the Voynich Manuscript: Medical, Pharmacological, and Technical Knowledge in Late Medieval Europe

. The Voynich Manuscript (Beinecke MS 408) has traditionally been interpreted as a cryptographic, esoteric, or anomalous object within medieval studies. Despite extensive scholarly attention, these approaches have failed to produce a functional or historically grounded interpretation. This study proposes a reinterpretation of the manuscript as a coherent medical–pharmacological compendium produced in late medieval Central Europe. Rather than approaching the manuscript as an encoded text, the analysis adopts a functional-comparative methodology grounded in documented practices of medieval medicine, botany, chronobiology, and pharmaceutical process. Through systematic comparison with medical herbals, health calendars, distillation manuals, and technical manuscripts, this work demonstrates that the Voynich Manuscript employs a compressed system of technical notation integrating image, minimal text, spatial organization, and implicit measurement. Features traditionally cited as anomalous—including non-naturalistic botany, repetitive text, circular diagrams, and so-called balneological imagery—are shown to be consistent with established modes of late medieval technical knowledge transmission. The manuscript’s opacity is therefore not the result of encryption or deception, but a consequence of its functional design for trained practitioners within a restricted professional context. Repositioning the Voynich Manuscript as a technical artifact rather than an enigma allows it to be reintegrated into the history of medieval medicine and science.