An intermediate in the combustion of carbon and hydrocarbons, carbon monoxide, is of special importance because it is a poisonous gas, but also economically useful for the production of syngas. Solid and heavy liquid fuels also undergo a great number of pyrolysis reactions that give more easily oxidized, gaseous fuels.
GM is short for General Motors. in text means Good Morning or means Good Move. Also means Genetically Modified.
GSM stands for Global System for Mobile Communications and is a standard to define means of mobile communication such as phone calls and SMS text messaging. SMS texts can be encoded using several alphabets. The most common 7-bit alphabet is often referred to as GSM alphabet and contains all latin characters, digits and several special characters. An SMS sent using the GSM alphabet can contain up to 160 characters.