The Dictionary Lexicon plugin brings comprehensive dictionary functionality with vocabulary building tools. It uses the Wordnet dictionary dataset to provide detailed word definitions that you can search and insert into your notes. Save words to a dedicated vocabulary file for reference. The flashcard system uses spaced repetition to help you review saved vocabulary periodically. You can look up words through multiple methods: ribbon icon, command palette, context menu or even auto detection of the word under your cursor. Templates let you customize how definitions appear when inserted. The plugin downloads a dictionary file from an external source during initial setup, which gets cached locally for offline use afterward.