What is the meaning for latin root cule?

The Latin root "cule" doesn't exist on its own. It's likely you're thinking of -cule, which is a suffix that means "small" or "little".

Here are some examples of words with the suffix "-cule":

* Animalcule: A tiny animal, especially one visible only under a microscope.

* Molecule: The smallest unit of a substance that has the chemical properties of that substance.

* Corpuscle: A small particle, especially a blood cell.

* Vesicle: A small sac or bladder containing fluid.

So, while "cule" by itself doesn't have a specific meaning, the suffix "-cule" is used to indicate something small or diminutive.