Meaning of “mandatory” in the English Dictionary

"mandatory" in English

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mandatoryadjective

uk /ˈmæn.də.tər.i/ us /ˈmæn.də.tɔːr.i/ formal

(Definition of “mandatory” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mandatory" in American English

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mandatoryadjective [ not gradable ]

us /ˈmæn·dəˌtɔr·i, -ˌtoʊr·i/

made necessary, usually by law or by some other rule:

The test includes a mandatory essay question.

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

"mandatory" in Business English

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mandatoryadjective

uk /ˈmændətəri/ us /ˈmændəˌtɔri/

used to describe something that must be done, usually because the law states that it is necessary:

mandatory for sb to do sth They would make it mandatory for everyone to have health insurance.
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(Definition of “mandatory” from the Cambridge Business English Dictionary © Cambridge University Press)

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mandatory

However, mandatory energy savings targets could lead to short-term measures being implemented purely to meet targets, rather than the long-term focus which is needed.
In return for pharmaceutical companies carrying out mandatory clinical trials for drugs intended for use in children they will be given financial compensation.
The report inserted a clause making it mandatory to ascertain that the manufacturer has used none of the heavy metals prohibited by the end-of-life vehicles directive.
The report’s demands for the mandatory translation of all documents and for the accused’s partner to be informed as a matter of course are equally significant.
However, to simplify the system, the sharing of non-animal data has been made mandatory only if requested by a potential registrant.
Common sense and the interests of small and medium enterprises suggest that data-sharing should be mandatory, while of course respecting commercial confidentiality in the strict sense of the term.
We of course want the compensatory payments to be arranged on a mandatory basis, with unambiguous criteria, and so we have no great problems in that regard.
I would have liked the rapporteur’s proposed 4% ceiling to be mandatory in all situations and not only in emergencies.
The common position includes mandatory labelling, but states also that these substances could be exempted in the future, should scientific evidence provide justification for such action.
The conciliation process was a difficult one, given the highly divergent positions involved, and the outcome was satisfactory but inadequate, particularly as regards the parameters that have now become mandatory.