Tabun is a type of poisonous nerve gas that was developed during World War II. Synonyms for the word "tabun" include GA, which stands for "nerve agent GA," and ethyl N,N-dimethylphosphoramidocyanidate. These synonyms are often used in scientific and military settings to describe the chemical properties of tabun and other nerve agents. Other synonyms for tabun include nerve gas, poison gas, and chemical weapon. While the use of tabun and other nerve agents in warfare is widely condemned by international law, these chemicals continue to be used in isolated incidents by terrorist organizations and rogue regimes around the world.