Added Terminology

Signed-off-by: thadumi <th.theodor.th@gmail.com>

spec/src/main/asciidoc/chapters/interceptor_programming_contract/interceptor_programming_contract.adoc

@@ -10,3 +10,5 @@
 
 [[interceptor_programming_contract]]
 == Interceptor Programming Contract
+
+include::terminology.adoc[]

spec/src/main/asciidoc/chapters/interceptor_programming_contract/terminology.adoc

@@ -0,0 +1,28 @@
+////
+*******************************************************************
+* Copyright (c) 2019 Eclipse Foundation
+*
+* This specification document is made available under the terms
+* of the Eclipse Foundation Specification License v1.0, which is
+* available at https://www.eclipse.org/legal/efsl.php.
+*******************************************************************
+////
+
+[[terminology]]
+== Terminology
+
+The following terminology is used in this
+document:
+
+ _Interceptor class_ : a class containing
+interceptor methods that is designed to be associated with a target
+class, method, or constructor.
+
+ _Interceptor_ : instance of an interceptor
+class.
+
+ _Interceptor method_ : a method of an
+interceptor class or of a target class that is invoked to interpose on
+the invocation of a method of the target class, a constructor of the
+target class, a lifecycle event of the target class, or a timeout method
+of the target class.