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OpenStudy (cathyangs):

If I want to refer to a hologram-type thing in a formal essay, should I use "3D" to describe it, or spell out "three-dimensional"?

OpenStudy (anonymous):

You would spell out three dimensional

OpenStudy (cathyangs):

But without a hyphen, the way you wrote it?

OpenStudy (anonymous):

I believe it's written just like that.

OpenStudy (cathyangs):

Ok, thank you.

OpenStudy (anonymous):

No problem.

OpenStudy (cathyangs):

really? ... o.O so confuzzled.

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