ELI5: Explain Like I'm 5

Vesicular texture

Imagine that you have a big piece of bread that is really fluffy and has lots of tiny air pockets inside of it. This is kinda like what "vesicular texture" means. When something has a vesicular texture, it means that it has lots of little empty spaces inside of it, kinda like bubbles or air pockets.

This can happen in lots of different things, like rocks or lava or even some kinds of bread. It happens when there's a lot of gas or liquid trapped inside of a material, and then it gets trapped there as the material solidifies or cools down. So next time you see a block of really bubbly-looking lava, you can say "hey, that has a vesicular texture!"