# How do we pronounce this symbol?

I would like to know how to pronounce in english this symbol $\nabla \phi$ It is something phi ... ?

thank you

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del phi? –  Daniel R May 12 '14 at 11:51
If you know the context, you can also say "grad phi" (if in the context of gradient), or it could be used in the context of curl or divergence. That's a more "informed" pronunciation that tells you more than just plain notation. –  orion May 12 '14 at 11:56
Thanks to @Daniel, now I know what to call oracles in the future! –  Hurkyl May 12 '14 at 12:08
Detexify can sometimes help with this kind of question: detexify.kirelabs.org/classify.html –  Phira May 12 '14 at 12:30
@Phira What an awesome site! That should be stickied somewhere (and probably is already) –  Mathias711 May 12 '14 at 12:39