This paper introduces and formalizes the concept of a "multifaceted object," denoted as "o". This object "o" is hypothesized to exist simultaneously as a physical or imaginary entity, a collection of semantic, semiotic, and pragmatic significations—explicitly encompassing ideas and concepts themselves—a digital representation (e.g., a Blender file), and various matricial forms (e.g., an image, a pixel matrix). The author posits that human reasoning involves the manipulation of these "o" objects as fundamental units of thought, equivalent to ideas and concepts. The primary challenge addressed is the rigorous scientific and mathematical definition of such an entity, which inherently bridges physical, abstract-semantic (including conceptual/ideational), and digital-numerical ontological levels. The paper refines the definition of "o" by delineating its core facets: Matricial (M), Semantic (S, incorporating ideas/concepts), Visual/Image (I), and Further Aspects (X), which include physical, digital-representational (e.g., a Blender file encoding a 3D model), and pragmatic dimensions. Methodologically, a multi-pronged approach for formalization is proposed, leveraging Sheaf Theory for local-global coherence, Category Theory for high-level structural relationships, Hybrid Algebraic Structures for concrete state-space definitions and inter-modal operators, and Multimodal Type Theory for a logically consistent constructive framework. Furthermore, the principles of Object-Oriented Programming (OOP) are integrated to provide a complementary perspective on the structure and behavior of "o". From these formalisms, a typology of rules—mathematical, semiotic, linguistic, matricial, and digital-representational—is derived. These rules govern the intra-aspect properties and, crucially, the inter-aspect relationships of "o", including transformations inherent in reasoning processes. The paper also discusses advanced considerations such as temporal dynamics, learning mechanisms, cross-modal coherence, and the ontological status of "o" as a potential unit of mentalese (the language of thought). The implications of this framework are suggested to be potentially transformative for fields like Artificial Intelligence (AI), particularly in areas of multimodal systems and conceptual reasoning, Cognitive Science, in modeling information integration and concept manipulation, and the Philosophy of Mind and Science, by offering a formal approach to ideas, representation, and meaning.