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I read out

$$\frac{d}{dx}$$ as "d by d x".

How do I read out:

$$\frac{∂}{∂x}$$ then?

I saw this Wikipedia Page it said:

The symbol is referred to as "del" (not to be confused with ∇, also known as "del"), "dee", "partial dee", "partial" (especially in LaTeX), "round d", "curly dee", or "dabba".

So according to this, I should read it out as "del by del x". Is that correct? If not, how else?

Pritt Balagopal
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    IMO, $\nabla$ is better known as nabla (LaTeX \nabla). –  Jun 14 '17 at 14:06
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    Using "dee dee x" works for me. It's often clear from the context whether to interpret "dee" as $d$ or $\partial$. If not, I say "partial dee dee x". – user254433 Jun 14 '17 at 14:08
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    https://math.stackexchange.com/questions/120504/how-do-you-pronounce-partial-derivatives, https://math.stackexchange.com/questions/110565/del-partial-delta-nabla-correct-enunciation – Hans Lundmark Jun 14 '17 at 14:09
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    I say (I say, I say) "Partial dee by dee ecks" –  Jun 14 '17 at 14:53
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    I have edited my answer... check it out... – Soham Sep 06 '17 at 18:35

2 Answers2

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You can say $\displaystyle\frac{\partial y}{\partial x}$ as "Partial derivative of y wrt. x" or "del y by del x".

You can also read this introductory text on partial derivatives. enter image description here

Soham
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Partial derivative with respect to x

jimjim
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