Simple Definition of datum

from our Learner's Dictionary

datum

noun

ˈdeɪtəm How to pronounce datum (audio) ˈdætəm How to pronounce datum (audio)
plural data ˈdeɪtə How to pronounce datum (audio) ˈdætə How to pronounce datum (audio) or datums
formal + technical : a single piece of information
an important historical datum [=fact]

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“Datum.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/datum. Accessed 16 Apr. 2026.

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