There isn't a single scientific name for an egg. The term "egg" is a general term that applies to the reproductive unit of many different animals.

To be more specific, you would need to specify the type of animal you are referring to. For example:

* Chicken egg: *Gallus gallus domesticus*

* Human egg: *Oocyte*

* Frog egg: *Amphibian egg*

Let me know if you have a specific type of egg in mind, and I can give you a more precise scientific name.