diff --git a/docs/glossary.rst b/docs/glossary.rst
index 22f5ad5..48db25e 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -182,8 +182,9 @@ Glossary
      The "session" is a SQLAlchemy abstraction for an open database
      connection, essentially.
 
-     In practice this generally refers to a
-     :class:`~wuttjamaican.db.sess.Session` instance.
+     For the :term:`app database`, the class used is
+     :class:`~wuttjamaican.db.sess.Session`; other databases may use
+     different classes.
 
    email handler
       The :term:`handler` responsible for sending email on behalf of