https://grammaticon.clld.org/concepts

The Grammaticon is a collection of grammatical comparative concept terms with definitions and links to other resources and comparative data collections such as WALS (The World Atlas of Language Structures) and Grambank.

Version 1.1 is an early-release version that is still in some ways incomplete. The plan is to update and expand it regularly.

The Grammaticon contains several hundred English grammatical concept terms, with (retro-)definitions by Martin Haspelmath, and links to corresponding terms in the English Wikipedia, the SIL Glossary of Linguistic Terms, and Croft’s Comparative Concepts Database ( https://comparative-concepts.github.io/cc-database/cc-database.html; originally in the online appendix of Croft (2022).

In the definitions, a superscript circle (°) marks terms which are defined elsewhere in the Grammaticon (“defining concepts”). Each concept page also shows the “derived concepts” (which are defined with reference to it), as well as “related features”. [[Some concepts have preliminary definitions, enclosed in double square brackets.]]