a. Of or relating to radio waves with a wavelength less than 10 meters (33 feet).
b. Of or relating to optical pulses with typical durations of femtoseconds.
2. Of extremely short duration: an ultrashort flash.
3. Extremely short: an ultrashort skirt.
4. Of or relating to fixed-income investments with extremely short maturities, usually less than one year.


(Telecommunications) (of a radio wave) having a wavelength shorter than 10 metres


(ˌʌl trəˈʃɔrt)

1. extremely short, esp. in duration.
2. (of a wavelength) smaller than 10 meters.
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References in periodicals archive ?
Contract notice: supply of a laser system for generating ultrashort laser pulses
Closing puts in the ProShares UltraShort Longer-term Bond ETF.
The nonlinear optical imaging technique developed by this team enables the use of the natural fluorescence of the drug when "excited" with ultrashort (femtosecond) laser pulses.
Thanks to the well-coordinated interaction between Start and RSCC, we have achieved ultrashort code delays.
The LS53L0X sensor features 2V8 to 3V5 low power, provides ultrashort to long-range detection and accurate ranging.
If you're looking for a celebrity who is embracing the silversiren trend, then checkout Michael Williams who has doubled down on the latest trends and gone for an ultrashort hairstyle to compliment her new silver-grey hair colour.
The agent combines ultrashort carbon nanotubes and bismuth clusters that show up on X-rays taken with computed tomography (CT) scanners.
At the Space and Naval Warfare Systems Center Pacific, research into these benefits has been ongoing for several years, but recently got a significant boost with the addition of two new assets: an ultrashort pulse laser (USPL) 2,000 times more powerful than the lab's current instruments, and more importantly, new professional Dr.
The cost to investors is 14 basis points (bps), making it one of the most competitively priced ultrashort duration ETFs on the market.
Hitachi Construction Machinery introduced two new ultrashort excavators with reduced tail-swing radius, making them perfect when working in and around obstacles--yet as tough as our large excavators.
Among the topics are dialogues about geometry and light, recent developments in weak value amplification and direct measurement, full color computational ghost video, light in a twist: orbital angular momentum, nonlinear photonics in chip-based structures, characterizing ultrashort laser pulses and carrier-envelope phase stabilization, and filamentation and self-induced beam propagation effects.
The electrons, which come bundled in ultrashort pulses, scatter off the sample's atoms and produce a signal on a detector that scientists use to determine where atoms are located in the monolayer.