Abstract: Based on the theory of hierarchical network of concepts (HNC), this paper makes an analysis of the significance of extension from theoretical studies on language information processing to studies on language processing through a discussion of “space” and “concept”, expounds the lexicon planar extension pattern, and tries to link up the conceptual expression in HNC and the structural expression of word meaning primitives in the theory of “synset-allolex”. In engineering such an extension shows a semantic network construction with techniques of language information processing, and in theory it may be generalized as the mapping from space of concept primitives to space of word meaning primitives

Key words: language information processing, concept primitive, structure of word meaning primitive