Answer: It means they are not made up of carbon and hydrogen.
Step-by-step explanation:
Organic compound is defined as the compound in which covalent bond is present between hydrogen and carbon atoms. They are also known as hydrocarbons.
An organic compound is a compound which is composed of one carbon particles bonded to different elements. Most generally, these carbon molecules are clung to hydrogen, oxygen and nitrogen particles. On the other hand, an inorganic compound is not basically made out of carbon molecules.
There can be either carbon atoms present or missing. Thus it can be inferred that the presence and absence of carbon determines whether a compound is inorganic or organic.