Definition of “black box” - English Dictionary

“black box” in British English

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black boxnoun [ C ]

uk /ˌblæk ˈbɒks/ us /ˌblæk ˈbɑːks/

Examples from literature

  • The second, often described as the "black box", provided conclusive information concerning course, altitude, and other data relating to the flight and functioning of the aircraft at the relevant period of time. 

(Definition of “black box” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“black box” in American English

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black boxnoun [ C ]

us /ˈblæk ˈbɑks/

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

“black box” in Business English

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black boxnoun [ C ]

uk us

[ usually singular ] a system or process that uses information to produce a particular set of results, but that works in a way that is secret or difficult to understand:

The main problem with many international capital flows is that they are non-transparent - they come from, and reside within, a 'black box'.

a piece of electronic equipment used to record and store information:

Installation of a black box allows all emails sent and received to be monitored.

a piece of equipment on an aircraft that records the plane's movements and positions during a flight, and which can give important information if the plane has an accident:

The black box often holds critical clues for investigators looking for the cause of fatal plane crashes.

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