LINK / CITE ADD TO WORD LIST. adjective. The definition of inorganic is something unrelated to organic matter or organic life, not animal or vegetable, or a chemical compound that does not contain carbon.An example of something inorganic is plastic.INK / CITE ADD TO WORD LIST. adjective. The definition of inorganic is something unrelated to organic matter or organic life, not animal or vegetable, or a chemical compound that does not contain carbon.