Meanings
adjectiveultrafast (comparative more ultrafast, superlative most ultrafast)
comparative more ultrafast · superlative most ultrafast · alternative ultra-fast
- Very fast, or of very short duration; especially concerning events that take place in femtosecond or picosecond timescales.
Origin
- Englishultra-
- Proto-Germanic*fastuz
- Proto-West Germanic*fast
- Old Englishfæst
- Middle Englishfast
- Englishfast
- Englishultrafast
Translations
Hungarian ultragyors
- ultragyorsvery fast or of very short duration
Cite this entry
APA
ultrafast. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ultrafast
MLA
“ultrafast.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ultrafast. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “ultrafast,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ultrafast.
Source: ultrafast on Wiktionary, CC BY-SA 4.0.