ISO 1951:2026

Overview

ISO 1951:2026 - Presentation of lexicographic entries in general language dictionaries - Fundamentals and recommendations - is an international standard developed by ISO for the structured and consistent presentation of entries in general language dictionaries. This document provides essential guidelines for both printed and digital dictionaries-be they monolingual, bilingual, or multilingual-using a lemma-oriented lexicographic approach. The standard aims to address the heterogeneous structures common in dictionary data presentation, ensuring clarity and usability for human end-users, while promoting interoperability and data consistency across language resources.

The document also aligns with the ISO 24613 series, which covers the modelling of underlying lexical data, ensuring a harmonized approach to the representation, retrieval, and reuse of dictionary content in diverse formats.

Key Topics

• Lexicographic Entry Structure:

  • Recommendations for organizing dictionary entries, including headwords, definitions, sense components, grammatical information, etymology, usage notes, examples, and cross-references.
  • Systematic use of delimiters, markers, and labels (such as grammatical, geographic, or domain labels) to clearly represent different types of information.

• Typographical Conventions:

  • Guidance on the use of typographic elements such as boldface, italics, abbreviations, superscripts, highlighting, and colour coding to distinguish between components in printed and digital dictionaries.
  • Suggestions for enhancing clarity with features like charts, hyperlinks, tooltips, icons, illustrations, and interactive elements, especially in digital environments.

• Core Concepts and Terminology:

  • Standardization of key terms such as lemma, lexical unit, macrostructure, microstructure, sense component, and usage label to ensure consistency across dictionary projects.
  • Development of a uniform metaterminology beneficial for data exchange and long-term resource management.

• Handling Heterogeneous Data:

  • Strategies to cope with the diversity in dictionary-making practices, accommodating both retro-digitized and born-digital resources while focusing on entries meant for human interpretation.
  • Recommendations for integrating lexicographic symbols and notations for better end-user navigation and understanding.

Applications

• Dictionary Development:

  • Facilitates the production of both print and digital dictionaries with standardized entry structures and clear typographical hierarchies, improving usability for editors, lexicographers, and end-users.
  • Aids in the retro-digitization and modernization of legacy dictionaries by providing a basis for transforming analogue content into consistent, machine-readable entries.

• Interoperability & Data Reuse:

  • Enables compatibility between different lexicographic resources and dictionary writing systems, making data sharing and aggregation more effective.
  • Supports resource interoperability by aligning with the Lexical Markup Framework (LMF), as specified in ISO 24613, and integrating relevant tagsets for structured data modelling.

• Linguistic Research & Language Resource Management:

  • Provides linguists, terminologists, and researchers in digital humanities with a robust framework for analysing, annotating, and managing lexical data.
  • Useful for compiling, editing, and validating dictionaries, especially in multilingual projects, language technology applications, and computational lexicography.

Related Standards

• ISO 24613 Series (Lexical Markup Framework - LMF):
  The definitive standard for modelling and representing lexical data, ensuring compatibility with ISO 1951 recommendations on dictionary structure and presentation.
• ISO 1087:2019:
  Furnishes terms and definitions for language and terminology work, underpinning the conceptual framework of ISO 1951.
• ISO 21636-1:2024:
  Addresses variation in linguistic resources, relevant for usage labels and sociolinguistic annotation.
• TEI (Text Encoding Initiative):
  Referenced for XML-based encoding practices and serialization mechanisms within lexicographic entries, particularly in digital applications.

ISO 1951:2026 provides foundational guidance to lexicographers, linguists, dictionary publishers, and language resource managers seeking to produce or modernize general language dictionaries that are user-friendly, structurally coherent, and compatible with evolving digital standards. By adopting the recommendations in this standard, organizations can ensure clarity, consistency, and future-proof interoperability in lexicographic publishing and language data management.