4901.91.00.20 - Dictionaries (including thesauruses)

This HTS category encompasses printed works that serve as reference tools, specifically dictionaries and thesauruses. These are defined as publications containing alphabetically arranged words and their meanings, or synonyms and antonyms. The scope includes both comprehensive dictionaries and more specialized thesauruses. The content must be printed, and the primary purpose is to provide linguistic information.

Distinguishing this category from its sibling, 4901.91.00.40 (Encyclopedias), is crucial. While both are reference works, dictionaries focus on individual words and their definitions, whereas encyclopedias provide in-depth articles on a wide range of subjects, organized thematically or alphabetically by topic. This HTS classification is specifically for those texts whose primary function is the definition and usage of words.

As this is a leaf node within the HTS structure, there are no further subdivisions for dictionaries and thesauruses. Therefore, classification at this level is final, based on the printed nature of the work and its dedicated purpose as a dictionary or thesaurus. Examples would include standard unabridged dictionaries, pocket dictionaries, bilingual dictionaries, and Roget-style thesauruses, provided they meet the printing and content requirements of this heading.