What does the latin word natrium mean?

The Latin word "natrium" doesn't have a specific meaning in itself. It's actually the Latinized form of the Greek word "natron".

Natron refers to a natural mineral found in Egypt that was used in ancient times for various purposes, including:

* Soapmaking: Natron was mixed with oils and fats to create a type of soap.

* Mummification: It was used in the process of mummification to dehydrate and preserve bodies.

* Glassmaking: Natron was an important ingredient in the production of glass.

The connection to sodium: "Natrium" was later adopted as the Latin name for the element sodium, which is found in natron. This is because sodium carbonate (Na2CO3) is a major component of natron.