diff --git a/source/_data/glossary.yml b/source/_data/glossary.yml
index 5c392f36a1d..89b0e55f006 100644
--- a/source/_data/glossary.yml
+++ b/source/_data/glossary.yml
@@ -459,6 +459,12 @@
   link: /docs/configuration/platform_options/
   aliases:
     - platforms
+- term: Polling
+  definition: >-
+    Data polling is the process of querying a device or service at regular intervals to check for updates or retrieve data. By defining a custom polling interval, you can control how frequently your system checks for new data, which can help optimize performance and reduce unnecessary network traffic.
+  link: /common-tasks/general/#defining-a-custom-polling-interval
+  aliases:
+    - data polling
 - term: Reload
   definition: >-
     Applies the changes made to the Home Assistant configuration files. Changes