英语 example sentences with "datum"

A tide gauge measures changes in sea level relative to a datum (a height reference).
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I don't think this is a matter of some datum of information that I'm waiting on. It's a matter of making certain that when I send young men and women into war, and I devote billions of dollars of U.S. taxpayer money, that it's making us safer.
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The singular of 'data' is 'datum'.
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A hundred and fifty feet from this pueblo is a large upright block of sandstone, which is said to be used as a datum point in the observations of the sun made by a priest of Zuñi for the regulation of the time for planting and harvesting, for determining the new year, and for fixing the dates of certain other ceremonial observances.
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