Tabular expressions are a formal notation using Tabular form to organize functions or relationships, and they have been widely used in documenting and analyzing software systems. To avoid misunderstanding and to support user with trustworthy tools, the meaning of these expressions must be fully defined. This paper presents the formal grammar and denotational semantics of the Tabular expressions in general model. By defining semantics assigned equation of each syntax unit of the Tabular expressions' formal grammar, denotational semantics of the Tabular expressions is specified. In addition, the meaning of some classical Tabular expression types and new table types are described based on this semantics. Comparisons made with other semantics description methods show that the denotational semantics method defines Tabular expressions' meaning precisely without subjecting to the restrictions of models and types of Tabular expressions. The proposed method breaks the existing methods' limitations and is an effective method.