diff --git a/book/source/conf.py b/book/source/conf.py
index 2f9972d..9c10089 100644
--- a/book/source/conf.py
+++ b/book/source/conf.py
@@ -36,6 +36,12 @@ numfig_secnum_depth = 0
 # https://github.com/executablebooks/MyST-Parser/issues/352
 myst_footnote_transition = False
 
+# Enable definition lists
+# https://myst-parser.readthedocs.io/en/latest/syntax/optional.html#syntax-definition-lists
+myst_enable_extensions = [
+    "deflist",
+]
+
 # -- Options for EPUB output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-epub-output