diff --git a/modules/angular2/src/core/facade/lang.ts b/modules/angular2/src/core/facade/lang.ts
index 487e1bd39e..9ab924ef21 100644
--- a/modules/angular2/src/core/facade/lang.ts
+++ b/modules/angular2/src/core/facade/lang.ts
@@ -23,9 +23,10 @@ export {_global as global};
 export var Type = Function;
 
 /**
- * Runtime representation of a type.
+ * Runtime representation a type that a Component or other object is instances of.
  *
- * In JavaScript a Type is a constructor function.
+ * An example of a `Type` is `MyCustomComponent` class, which in JavaScript is be represented by
+ * the `MyCustomComponent` constructor function.
  */
 export interface Type extends Function { new (...args): any; }