diff --git a/README.md b/README.md
index f97936d..48a2a25 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # vcd
 
-VCD parser using [llparse](https://github.com/nodejs/llparse)
+Value Change Dump ([VCD](https://en.wikipedia.org/wiki/Value_change_dump)) parser using [llparse](https://github.com/nodejs/llparse)