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Discover LudwigThe phrase "a datum" is correct and usable in written English.
It is typically used in scientific, technical, or academic contexts to refer to a single piece of information or data point.
Example: "In our research, we collected a datum that indicated a significant increase in temperature over the past decade."
Alternatives: "a data point" or "an individual piece of data."
Exact(60)
I would note a datum in the margin.
If asked what a datum is, most players would stare blankly.
Engineers typically rely on a datum, a constant plane from which elevations can be uniformly calculated.
Their answer is duly recorded, and it becomes a datum in a report on "public opinion".
The RNZAF Orion dropped a datum marker buoy to track the movement of the material.
The RNZAF P3 Orion dropped a datum marker buoy to track the movement of the material.
Its imminence is, today, not an article of faith but a datum of observation and experience.
In design-school terms, this establishes a datum, or a linear element that controls other objects.
A datum is designated by a capital letter enclosed by a datum box, which is connected to a solid or a blank datum triangle.
A datum or profile flagged as an outlier was excluded from further checks.
A datum is a plane defining the zero from which all dimensions are measured.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com