Dictionary.net

• a short-term obligation that is not interest-bearing (it is purchased at a discount); can be traded on a discount basis for 91 days

2006 - WordNet 3.0
By Princeton University

• a short-term obligation that is not interest-bearing (it is purchased at a discount); can be traded on a discount basis for 91 days

2011 - English Dictionary Database
By DataStellar Co., Ltd