Fluoro- is a prefix commonly used in chemistry and medicine to denote the presence of the element fluorine. However, some alternative terms can be used instead of fluoro- in specific contexts. For instance, perfluoro- indicates that all hydrogen atoms in a compound have been replaced by fluorine. Trifluoro- is used to describe a compound that contains three fluorine atoms, while difluoro- indicates that two fluorine atoms are present. Pentafluoroethane, often used as a refrigerant, and tetrafluoromethane, a gas used in the semiconductor industry, are just two examples of compounds that include the fluoro- prefix. Fluorinated compounds are essential for some industries, but they can also have environmental consequences if not handled properly.