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Classic usage
Pronunciation: /əkˌsɛl.əˈɹeɪ.ʃən/
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
First attested in 1531. From French accélération or more likely directly from Latin accelerātiō (“a hastening, acceleration”). Equivalent to accelerate + -ion.
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tap / space
Classic usage
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