Meaning of “jumbo” in the English Dictionary

"jumbo" in American English

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jumboadjective [ not gradable ]

us /ˈdʒʌm·boʊ/ infml

extremely large:

a jumbo size box of cereal

A jumbo jet is a very large aircraft that can fly long distances.

(Definition of “jumbo” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"jumbo" in Business English

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jumboadjective [ only before noun ]

uk /ˈdʒʌmbəʊ/ us

much larger than the usual size:

a jumbo TV screen

jumbonoun [ C ]

uk /ˈdʒʌmbəʊ/ us informal TRANSPORT

→  jumbo jet

(Definition of “jumbo” from the Cambridge Business English Dictionary © Cambridge University Press)