ultrafast
adjective
No English definition recorded for this entry.
L618830 on Wikidata ↗Wiktionary
adj
Etymology: Etymology tree English ultra- Proto-Germanic *fastuz Proto-West Germanic *fast Old English fæst Middle English fast English fast English ultrafast From ultra- + fast.
- Very fast, or of very short duration; especially concerning events that take place in femtosecond or picosecond timescales.