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Abstract 
"Interpretation of the Qur’an" is one of the foundational concepts in exegetical studies which, due to the diversity of its usages and meanings, has consistently been accompanied by theoretical ambiguity and distribution of opinion among commentators. One manifestation of this ambiguity concerns what exegetes intend by interpretation and how it relates to concepts such as exegesis, occasions of revelation, and application and extension. ʿAlī ibn Ibrāhīm al-Qummī is among the exegetes who proposed a fourfold classification for the interpretation of Qur’anic verses. However, a precise semantic analysis of these categories and their function within his exegetical approach has not yet been undertaken. Accordingly, the present study aims to clarify the semantics of the types of interpretation in Tafsīr al-Qummī and to elucidate their role in understanding his interpretive methodology. The research employs a library-based method for data collection, documentary citation for referencing sources, and a descriptive-analytical approach for examining and analyzing the issues. The findings indicate that al-Qummī’s four meanings, "Interpretation within Revelation,"  "Interpretation alongside Revelation," "Interpretation before revelation," and "Interpretation after revelation," respectively correspond to "Explicit Text," "Exegesis," "Occasions of revelation," and "Application and extension." The first meaning is associated with the clear and decisive verses (Muḥkam), while the other meanings relate to various aspects of verbal and semantic ambiguous verses (Mutashābih). The central role of the impeccable Imam (AS) in three of the four types is among the findings, indicating that Interpretation without the authority of the Imamate remains incomplete or impossible.