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What is "trolleybus"

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trolleybus
Longman Dictionary of Contemporary English
trolleybus
noun
EXAMPLES FROM CORPUS
▪ Again London led, its last trolleybus ran in 1962.
▪ Consider installing a tram or trolleybus system.
▪ During 1939, following the trolleybus conversions in North London, a number of rolling stock changes were made.
▪ Hammersmith trolleybus depôt disappeared in a redevelopment programme of that area.
▪ In spite of the war, trolleybus conversions continued for the time being in other parts of London, but did not affect the Croydon area directly.
▪ Plans were prepared for trolleybus conversion on a large scale.
▪ The Bill authorizing the conversion of a number of tram routes to trolleybus operation received Royal Assent on 31 July.
Wiktionary
trolleybus

n. (alternative spelling of trolley bus English)

WordNet
trolleybus

n. a passenger bus with an electric motor that draws power from overhead wires [syn: trolley coach, trackless trolley]

Wikipedia
Trolleybus

A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tram [in early years] or trolley) is an electric bus that draws power from overhead wires (generally suspended from roadside posts) using spring-loaded trolley poles. Two wires and poles are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole (or pantograph). They are also distinct from other kinds of electric buses, which usually rely on batteries. Power is most commonly supplied as 600- volt direct current, but there have been, and are, exceptions.

Currently, around 300 trolleybus systems are in operation, in cities and towns in 43 countries. Altogether, more than 800 trolleybus systems have existed, but not more than about 400 concurrently.

Usage examples of "trolleybus".

Now, the susurrus of human voices, of feet and bicycle wheels and trolleybuses, seemed eerily quiet by comparison.