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accelerate (v.)[accelerate 词源字典]: 1520s, from Latin acceleratus, past participle of accelerare "to hasten, quicken," from ad- "to" (see ad-) + celerare "hasten," from celer "swift" (see celerity). Related: Accelerated; accelerating.[accelerate etymology, accelerate origin, 英语词源]
acceleratory: "= accelerative", Early 18th cent. From accelerate + -ory. Compare earlier accelerating, accelerative.
betatron: "An apparatus for accelerating electrons in a circular path by magnetic induction", 1940s: from beta + -tron.