diff --git a/news/changelog-1.9.md b/news/changelog-1.9.md
index ff9ffefd75..b10afe00db 100644
--- a/news/changelog-1.9.md
+++ b/news/changelog-1.9.md
@@ -56,6 +56,7 @@ All changes included in 1.9:
 - ([#13870](https://github.com/quarto-dev/quarto-cli/issues/13870)): Add support for `alt` attribute on cross-referenced equations for improved accessibility. (author: @mcanouil)
 - ([#13950](https://github.com/quarto-dev/quarto-cli/pull/13950)): Replace ctheorems with theorion package for theorem environments. Add `theorem-appearance` option to control styling: `simple` (default, classic LaTeX style), `fancy` (colored boxes with brand colors), `clouds` (rounded backgrounds), or `rainbow` (colored start border and colored title).
 - ([#13954](https://github.com/quarto-dev/quarto-cli/issues/13954)): Add support for Typst book projects via format extensions. Quarto now bundles the `orange-book` extension which provides a textbook-style format with chapter numbering, cross-references, and professional styling. Book projects with `format: typst` automatically use this extension.
+- ([#13978])(https://github.com/quarto-dev/quarto-cli/pull/13978)): Keep term and description together in definition lists to avoid breaking across pages. (author: @mcanouil)
 
 ### `pdf`
 
diff --git a/src/resources/formats/typst/pandoc/quarto/definitions.typ b/src/resources/formats/typst/pandoc/quarto/definitions.typ
index 161469dac4..5657c633b8 100644
--- a/src/resources/formats/typst/pandoc/quarto/definitions.typ
+++ b/src/resources/formats/typst/pandoc/quarto/definitions.typ
@@ -28,6 +28,9 @@
   it
 }
 
+// Prevent breaking inside definition items, i.e., keep term and description together.
+#show terms.item: set block(breakable: false)
+
 // Some quarto-specific definitions.
 
 #show raw.where(block: true): set block(
diff --git a/tests/docs/smoke-all/typst/definition-item-no-break.qmd b/tests/docs/smoke-all/typst/definition-item-no-break.qmd
new file mode 100644
index 0000000000..9874a40fde
--- /dev/null
+++ b/tests/docs/smoke-all/typst/definition-item-no-break.qmd
@@ -0,0 +1,24 @@
+---
+title: "Definition Item No Break Test"
+format: typst
+_quarto:
+  tests:
+    typst:
+      ensurePdfTextPositions:
+        - # Term and description must be on the same page (fails if on different pages)
+          - subject: "Generate HTML"
+            relation: below
+            object: "Multi-format"
+        - # Description should be indented (NOT left-aligned with term)
+          - subject: "Generate HTML"
+            relation: leftAligned
+            object: "Multi-format"
+      noErrors: default
+---
+
+## Introduction
+
+{{< lipsum 4 >}}
+
+Multi-format
+: Generate HTML, PDF, Word, ePub, and more from one source.