The Haber-Bosch process is a chemical reaction that involves the conversion of atmospheric nitrogen gas (N2) into ammonia (NH3) by using hydrogen gas (H2) and a catalyst. Some synonyms for the Haber-Bosch process include the ammonia synthesis reaction, the nitrogen fixation reaction, and the Haber process. The ammonia synthesis reaction involves the production of ammonia from nitrogen and hydrogen gases. The nitrogen fixation reaction is a process where nitrogen gas is converted into ammonia, and this process is essential to the growth and development of plants. The Haber process involves the production of ammonia using a catalyst under high pressure and temperature conditions.