accelerator

• اسم يشير إلى جهاز أو مادة تزيد السرعة أو الوتيرة أو النشاط، مثل دواسة الوقود في المركبات، أو صمام ينظم تدفق الوقود، أو محفز كيميائي، أو جهاز علمي يزيد الطاقة الحركية للجسيمات المشحونة.

A noun referring to a device or substance that increases speed, rate, or activity, such as a pedal in a vehicle, a valve controlling fuel supply, a chemical catalyst, or a scientific instrument that boosts the kinetic energy of charged particles.

1. Vehicle pedalA2formal

   A foot-operated pedal in a vehicle that controls the throttle valve, regulating the engine's speed.

   دواسة الوقود

   • She pressed the accelerator to overtake the truck.
   • The car's accelerator stuck, causing a sudden surge in speed.
   • He eased off the accelerator as he approached the corner.

   المرادفاتgasgas pedalthrottle

2. Fuel regulation valveB2formal

   A valve that regulates the supply of fuel to the engine, controlling its power output.

   صمام التحكم بالوقود

   • The mechanic adjusted the accelerator to improve fuel efficiency.
   • A faulty accelerator can cause the engine to stall.
   • The accelerator controls the air-fuel mixture entering the engine.

   المرادفاتthrottlethrottle valve

3. Chemical catalystB2formalscientific

   A substance that initiates or accelerates a chemical reaction without being consumed or permanently changed.

   محفّز كيميائي

   • Platinum is used as an accelerator in many chemical reactions.
   • The accelerator reduced the reaction time from hours to minutes.
   • Adding an accelerator to the mixture caused an immediate reaction.

   المرادفاتcatalyst

4. Particle acceleratorB2formalscientific

   A scientific instrument that increases the kinetic energy of charged particles, used in physics research.

   مُسَرِّع الجُسَيْمَات

   • The Large Hadron Collider is the world's largest particle accelerator.
   • Scientists use accelerators to study the fundamental particles of matter.
   • The accelerator fired protons at nearly the speed of light.

   المرادفاتatom smasherparticle accelerator