Very fast, or of very short duration; especially concerning events that take place in femtosecond or picosecond timescales.(adjective)
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Use "ultrafast" in a sentence
"Electron beam computed tomography (EBCT) is also called ultrafast CT."
"Zewail and his colleagues have achieved this by introducing the fourth dimension of time into high-resolution electron microscopy, in what has been termed ultrafast "single-electron" imaging, where every electron trajectory is precisely controlled in time and space."
"· Includes its own CD ripper with 'ultrafast' rip mode and cddb music database lookup."