Add definition.

source/handbook/glossary/index.html.md

@@ -404,6 +404,10 @@ repository is usually called “Origin”.
 ---
 ### S
+#### SCLAU
+
+Abbreviation for SQO Count [Large And Up](https://about.gitlab.com/handbook/sales/#market-segmentation). This is the number of opportunities in large organizations passed from marketing to sales.
+
 #### Shell
 Related documentation: <https://docs.gitlab.com/ce/gitlab-basics/start-using-git.html>