TITLE: How do you pronounce (partial) derivatives?
QUESTION [22 upvotes]: I am not an English speaker that is why I asked this question. In addition, I think english.stackexchange.com is not the proper place to ask this because (I am so sorry) I don't think most of them know mathematics deeply.
How do you pronounce the following derivatives in English?

$\frac{\textrm{d}y}{\textrm{d}x}$
$\frac{\textrm{d}^2y}{\textrm{d}x^2}$
$\frac{\partial y}{\partial x}$
$\frac{\partial^2 y}{\partial x^2}$
$\frac{\partial^3 y}{\partial x^2\partial z}$

Feel free to edit the tag if it has been chosen incorrectly.
For example, is it correct if I pronounce $\frac{\textrm{d}y}{\textrm{d}x}$ as "dee wai over dee eks"?

REPLY [3 votes]: 3.
$$ \frac{\partial y}{\partial x}\rightarrow\text{day wai, day eks}$$
5.
$$ \frac{\partial^3 y}{\partial x^2\partial z}\rightarrow\text{day cubed wai, day eks squared, day zee}$$
6.
$$\nabla F\rightarrow\text{del eff}$$