An interesting word

I accidentally typed the word "prill" into a Google Search instead of the world "pill". That led to the discovery that "prill" is a real word.

What's it mean?

" a pellet or solid globule of a substance formed by the congealing of a liquid during an industrial process "

That's what it means.  So what does a "prill" look like?

Here's an example. These prills are made of calcium chloride.

Exciting, right?