diff -r 66dcab7b1b43 -r cb8b8f7934f1 data/dictionary.xml
--- a/data/dictionary.xml	Sat Aug 17 18:47:39 2013 +0200
+++ b/data/dictionary.xml	Sat Aug 17 18:51:50 2013 +0200
@@ -1235,6 +1235,16 @@
 		</explanation>
 	</concept>
 	<concept>
+		<term abbreviation="PID" completeForm="process identifier" language="en"/>
+		<explanation language="en">
+			<text>
+				identifier of an process (running program) in an operating system;
+				PID 1 is usually assigned to the init process (the first process which runs other ones)
+			</text>
+		</explanation>
+		<tag>computer</tag>
+	</concept>
+	<concept>
 		<term abbreviation="" completeForm="Blue box" language="en"/>
 		<term abbreviation="" completeForm="BlueBox" language="en"/>
 		<explanation language="en"><text></text></explanation>