diff --git a/doc/glossary.md b/doc/glossary.md
index 83071dd..854ab5f 100644
--- a/doc/glossary.md
+++ b/doc/glossary.md
@@ -58,6 +58,10 @@ the artifact blob.
 an abstract entity describing a dedicated usage context or
 meaning for a provided piece of software.
 
+### Component Constructor<a id="compconst"/>
+
+a file that acts as input for the OCM CLI to construct one or multiple component version(s).
+
 ### [Component Descriptor](01-model/01-model.md#components-and-component-versions)<a id="compdesc"/>
 
 the formal description of a [component version](#compvers).