diff --git a/quantities/units/power.py b/quantities/units/power.py
index 06774eb..4bb35d9 100644
--- a/quantities/units/power.py
+++ b/quantities/units/power.py
@@ -65,4 +65,10 @@
     aliases=['ton_of_refrigeration']
 )
 
+dB = decibel = UnitQuantity(
+    'decibel',
+    symbol='dB',
+    aliases=['decibels']
+)
+
 del UnitQuantity, Btu, J, s, h, A, V