Here are some examples of how "fluoro" is spelled:
* Fluoride: A compound containing fluorine.
* Fluorescence: The emission of light by a substance that has absorbed light or other electromagnetic radiation.
* Fluorocarbon: A compound containing carbon and fluorine.
* Fluorspar: A naturally occurring mineral that contains fluoride.
It's important to remember that "fluoro" is always spelled with "o" at the end, never "u".