Dave's ESL Cafe's Student Discussion Forums

[Iris Luo]

Dear teacher,

I would like to know how we express "3D" in daily life?
I mean, how to pronounce it?

Just like "three -dii"?
What if I will use this word in formal presentation?
Is it still the same?

Thank you.

[pugachevV]

Three Dee is the usual pronunciation. You can use it in formal presentations. It's almost universally understood to mean three-dimensional.

In formal presentations the correct form is to write or say initially, "Three-dimensional, or 3D" - after that you can just refer to it as "3D".

[Iris Luo]

Dear teacher,

Thank you so much!