speedup

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the act of accelerating;
increasing the speed
• Syn:
acceleration, quickening
• Ant:
deceleration (for: acceleration)
• Derivationally related forms:
speed up, quicken (for: quickening), accelerate (for: acceleration)
• Hypernyms:
speed, speeding, hurrying