diff --git a/docs/source/glossary.rst b/docs/source/glossary.rst
new file mode 100644
index 0000000..9c20316
--- /dev/null
+++ b/docs/source/glossary.rst
@@ -0,0 +1,12 @@
+.. _glossary:
+
+********
+Glossary
+********
+
+.. glossary::
+   :sorted:
+
+   decommutation
+      The process of extracting individual measurements and housekeeping
+      values from a telemetry stream into separate data products.
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 95123d3..5da1ba9 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -11,3 +11,4 @@ documentation for details.
 
    cli
    api/modules
+   glossary