What are the part carbondioxide mean?

"Carbondioxide" is not a recognized term in chemistry or any other field. It appears to be a misspelling of "carbon dioxide," which is a colorless, odorless gas composed of one carbon atom and two oxygen atoms. Carbon dioxide is a greenhouse gas that is naturally present in the Earth's atmosphere and is also produced by human activities such as burning fossil fuels and deforestation.

The part carbon means that the molecule contains carbon atoms.
The part di means that there are two carbon atoms in the molecule.
The part oxide means that the molecule contains oxygen atoms.
So, carbon dioxide is a molecule that contains two carbon atoms and two oxygen atoms.