diff -r 321b8e09195f -r dd6ad762c653 data/dictionary.xml
--- a/data/dictionary.xml	Mon Aug 19 18:24:25 2013 +0200
+++ b/data/dictionary.xml	Mon Aug 19 18:30:18 2013 +0200
@@ -553,8 +553,14 @@
 		<explanation language="en"><text></text></explanation>
 	</concept>
 	<concept>
-		<term abbreviation="SIM" completeForm="" language="en"/>
-		<explanation language="en"><text></text></explanation>
+		<term abbreviation="SIM" completeForm="subscriber identification module" language="en"/>
+		<term abbreviation="SIM" completeForm="subscriber identity module" language="en"/>
+		<explanation language="en">
+			<text>
+				a smartcard which contains IMSI, ke and cryptographic functions;
+				is used to identify and authenticate subscribers in mobile phone networks
+			</text>
+		</explanation>
 	</concept>
 	<concept>
 		<term abbreviation="GT" completeForm="global title" language="en"/>