URM: A Lexicon of Expression A Subject-Free Normalization Language for Cross-Scale Physical Reasoning (Specification Draft)

URM: A Lexicon of Expression defines a subject-free, non-ontological normalization language for expressing physical statements across scales without altering existing theories. The document introduces a typed lexical core (L0) that constrains how physical terms are expressed and related, rather than proposing new physical entities, forces, laws, or equations. It is intended as a reference specification, not a physical theory. Key features include: A verb-first grammar, in which verbs represent invariant processes and nouns represent closure-derived persistent forms. Explicit grammatical roles (verbs, nouns, modifiers, relations), closure-relative tense, and lifecycle aspect, designed to prevent category errors such as conflating pre-record variability with macroscopic identity. A machine-checkable meta-tag schema (e.g. role, scale, closure, regime, record, admissibility) with normative well-formedness constraints. A hierarchy of expression regimes (R0–R7) that enforces process separation across scale without asserting ontological “levels of reality”. Worked examples demonstrating normalization of common physics statements, including rejection of anthropomorphic or teleological formulations. Explicit separation between the normative lexicon and non-normative implementation guidance, allowing multiple toolchains or validators to adopt the language without coupling to a specific system. The lexicon is normatively anchored to URM3 V2.1 and V2.2, which define the underlying grammar, axioms, and observer action semantics. This document functions as the language and normalization layer for URM, providing a stable interface for expression, translation, and reasoning. This specification is intended for use by: researchers working across quantum, classical, thermodynamic, relativistic, and cosmological domains; AI systems ingesting or reasoning over physics literature; toolchains that require explicit verification, termination, or risk-flagging of scientific statements. The document makes no empirical claims and imposes no obligation to adopt its mechanisms. It should be understood as representing what is possible—feasibility and clarity, not mandate. Decisions regarding adoption or non-adoption remain the responsibility of system designers and operators. An illustrative, non-normative validator profile and reference serialization format is published separately as Implementation Addendum A: URM-L0 Validator Profile and Reference Serialization.