diff --git a/book/src/terminology.md b/book/src/terminology.md
index 9eadc0b..d8517a0 100644
--- a/book/src/terminology.md
+++ b/book/src/terminology.md
@@ -14,8 +14,7 @@ requirement is often fulfilled by a PKI.
 Possible deployment options:
 - Echo-broadcast (Goldwasser-Lindell)
 - Posting commitments to an authenticated centralized server that is trusted to
-  provide a single view to all participants
-
+  provide a single view to all participants (also known as 'public bulletin board')
 
 ### _Peer to peer channel_