diff --git a/doc/manual/src/SUMMARY.md.in b/doc/manual/src/SUMMARY.md.in
index 2fe77d2c6..c728f5296 100644
--- a/doc/manual/src/SUMMARY.md.in
+++ b/doc/manual/src/SUMMARY.md.in
@@ -18,6 +18,7 @@
   - [Uninstalling Nix](installation/uninstall.md)
 - [Nix Store](store/index.md)
   - [File System Object](store/file-system-object.md)
+  - [Store Object](store/store-object.md)
 - [Nix Language](language/index.md)
   - [Data Types](language/values.md)
   - [Language Constructs](language/constructs.md)
diff --git a/doc/manual/src/architecture/architecture.md b/doc/manual/src/architecture/architecture.md
index 6e832e1f9..79429508f 100644
--- a/doc/manual/src/architecture/architecture.md
+++ b/doc/manual/src/architecture/architecture.md
@@ -63,7 +63,7 @@ The command line interface and Nix expressions are what users deal with most.
 > The Nix language itself does not have a notion of *packages* or *configurations*.
 > As far as we are concerned here, the inputs and results of a build plan are just data.
 
-Underlying the command line interface and the Nix language evaluator is the [Nix store](../glossary.md#gloss-store), a mechanism to keep track of build plans, data, and references between them.
+Underlying the command line interface and the Nix language evaluator is the [Nix store](../store/index.md), a mechanism to keep track of build plans, data, and references between them.
 It can also execute build plans to produce new data, which are made available to the operating system as files.
 
 A build plan itself is a series of *build tasks*, together with their build inputs.
diff --git a/doc/manual/src/glossary.md b/doc/manual/src/glossary.md
index ad3cc147b..b6d8a433a 100644
--- a/doc/manual/src/glossary.md
+++ b/doc/manual/src/glossary.md
@@ -59,7 +59,7 @@
 - [store]{#gloss-store}
 
   A collection of store objects, with operations to manipulate that collection.
-  See [Nix Store] for details.
+  See [Nix store](./store/index.md) for details.
 
   There are many types of stores.
   See [`nix help-stores`](@docroot@/command-ref/new-cli/nix3-help-stores.md) for a complete list.
diff --git a/doc/manual/src/store/index.md b/doc/manual/src/store/index.md
index 316e04179..8a5305062 100644
--- a/doc/manual/src/store/index.md
+++ b/doc/manual/src/store/index.md
@@ -1,4 +1,5 @@
 # Nix Store
 
-The *Nix store* is an abstraction used by Nix to store immutable filesystem artifacts (such as software packages) that can have dependencies (*references*) between them.
-There are multiple implementations of the Nix store, such as the actual filesystem (`/nix/store`) and binary caches.
+The *Nix store* is an abstraction to store immutable file system data (such as software packages) that can have dependencies on other such data.
+
+There are multiple implementations of Nix stores with different capabilities, such as the actual filesystem (`/nix/store`) or binary caches.
diff --git a/doc/manual/src/store/store-object.md b/doc/manual/src/store/store-object.md
new file mode 100644
index 000000000..0b2b84ea5
--- /dev/null
+++ b/doc/manual/src/store/store-object.md
@@ -0,0 +1,10 @@
+## Store Object
+
+A Nix store is a collection of *store objects* with *references* between them.
+A store object consists of
+
+  - A [file system object](./file-system-object.md) as data
+  - A set of [store paths](@docroot@/glossary.md#gloss-store-path) as references to other store objects
+
+Store objects are [immutable](https://en.wikipedia.org/wiki/Immutable_object):
+Once created, they do not change until they are deleted.