GC: adj

S: UN – http://www.un.org/staffdevelopment/viewPage.asp?selMenu=mandatory.asp (last access: 4 September 2014); NAVARRO p. 602.

N: 1. 1570s, “of the nature of a mandate,” from Late Latin mandatorius “pertaining to a mandator,” from Latin mandatus, past participle of mandare (see mandate (n.)). Sense of “obligatory because commanded” is from 1818.
2. Required by law or mandate; compulsory.
3. Collocations:

• approval, attribute, field, parameter, sentence, to become mandatory for, to be mandatory to.

S: 1. http://www.etymonline.com/index.php?allowed_in_frame=0&search=mandatory&searchmode=none (last access: 4 September 2014). 2. http://www.oxforddictionaries.com/definition/english/mandatory (last access: 4 September 2014). 3. http://www.merriam-webster.com/dictionary/mandatory (last access: 9 June 2015); http://www.macmillandictionary.com/dictionary/british/mandatory (last access: 9 June 2015); FCB.

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