| Acronym | Meaning |
 | OIOC | Oriental & India Office Collections (in The British Library) |
 | OTC | Over-The-Counter (drugs) |
 | HORECA | Hotel |
 | KT | Kilotesla |
 | C/S/A | CINC |
 | NDU | National Defense University (Washington |
 | PGCE | Postgraduate Certificate In Education |
 | MG | Magnesium - Megagram |
 | GSM | General Service Medal - Grams Per Square Metre (paper Thickness; Properly G/m?) - Ground Station Module - Groupe Sp?cial Mobile (French |
 | IR | Infrared - Intelligence Requirement (military) -Iran (FIPS 10-4 Country Code; ISO 3166 Digram) - Iran Air (IATA Alpha Code) See Entry For More |