automatic transmission
US /ˌɑː.t̬əˈmæt.ɪk trænzˈmɪʃ.ən/
UK /ˌɑː.t̬əˈmæt.ɪk trænzˈmɪʃ.ən/
1.
a system in a vehicle that changes gear automatically, rather than by the driver having to change gear manually
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Most new cars come with an automatic transmission.
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Driving with an automatic transmission is often considered easier for beginners.