Definition of catalyser in English:

catalyser

noun

British
  • another term for catalytic converter
    • ‘Exhaust gas conduit of an internal combustion engine with a starting catalyser arranged near the engine’
    • ‘Conversely, heating is retained in the exhaust manifold to prevent the expelled gas cooling before it reaches the catalyser so that final harmful emissions from the car are minimised.’

Pronunciation:

catalyser

/ˈkat(ə)lʌɪzə/