open day

noun

Definition of open day

British
: an event in which an organization (such as a school or company) invites the public to visit in order to see the things that happen there

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“Open day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/open%20day. Accessed 14 Aug. 2020.

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Nglish: Translation of open day for Spanish Speakers

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