Rhetoric (belāgha), one of the fundamental pillars of Arabic literature, has been an essential field for analyzing the depth of meaning and the aesthetic expressions created through the Arabic language for centuries. It plays a significant role in revealing the grammatical structures and literary arts of the Arabic language. Over the course of history, many scholars have approached rhetoric from different perspectives. However, despite the profound nature and widespread influence of this ancient science, studies systematically presenting rhetorical terms in an alphabetical order or in the form of a dictionary have only emerged in relatively recent times. In classical rhetorical works, terms were typically explained according to their thematic contexts, but these terms were not presented in a dictionary format. This gap created a need for a comprehensive reference source for rhetorical terms. Bedevi Tabane’s Muʿcemü’l-Belâğati’l-ʿArabiyye is the first comprehensive dictionary that meets this need, where rhetorical terms are systematically arranged alphabetically and presented with their definitions. In this context, Tabane's work stands out as the first original and systematic dictionary of rhetorical terms arranged alphabetically. Not only does Tabane provide the definitions of terms, but he also offers explanations of the historical development, classical usage, and modern interpretations of each term. Each term is explained within the context of classical rhetorical authorities (such as al-Jurjani, alSakkaki, al-Hazini, etc.), while occasionally incorporating contemporary linguistic approaches. This makes the work valuable not only for those interested in classical Arabic literature but also for researchers who wish to apply modern literary analysis methods. This paper examines the pioneering role of Tabane's work in the field of rhetoric and its significance in the development of such scholarly efforts. The research employs a qualitative analysis method to investigate how rhetorical terms are organized in a systematic manner and their impact on modern research. The study also evaluates the position of the work within Arabic linguistics from the perspective of dictionary writing, conducting a comparative analysis with similar modern works. Additionally, the paper will focus on how these terms are addressed in a different context compared to classical rhetorical works. The validity and reliability of the work will also be assessed, particularly in terms of its contribution to rhetorical studies as an academic text. Ultimately, the goal of this study is to highlight the scientific and methodological importance of this work as the first systematic dictionary in Arabic rhetoric. The main findings of the research reveal that Muʿcemü’l-Belâğati’l-ʿArabiyye by Bedevi Tabane offers a more accessible and comprehensible source both academically and practically, compared to earlier works on rhetorical terms. This work has inspired new studies in the field of rhetoric and has facilitated a more systematic examination of rhetorical terms.