Definition of "ultrashort" [ultrashort]

• Of or relating to radio waves with a wavelength less than 10 meters (33 feet). (adjective)
• Of extremely short duration: an ultrashort flash. (adjective)
• Extremely short: an ultrashort skirt. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Clonidine and naloxone in ultrashort opiate detoxification."
• "Investors filed suit in 2008, claiming the brokerage had misled them about the risks involved in the "ultrashort" - term fund, which suffered heavy losses amid the market's swoon in 2007 and 2008."
• "Ultrashort Bonds So-called ultrashort bond funds, which invest in bonds of an average duration of one year or less, are often used as a tool to park short-term cash."