Acronyms & Initialism

(The key difference between an acronym and an initialism is that an acronym forms a new word, while an initalism does not. For example, you say “nay-to” for NATO; this means you are saying a word, as opposed to saying each letter (ehn-ay-tee-oh). So “NATO” is an acronym. But “U.K.” is an intialism for United Kindom: you say each letter individually (you don’t say “yuk”, so you know it’s not a word). Also, the periods are a dead-giveaway that’s it’s an intialism)

  1. PHP : Hypertext Preprocessor
  2. HTML: Hypertext Markup Language
  3. GIF: Graphics Interchange Format
  4. PNG: Portable Network Graphics
  5. JPEG: Joint Photographic Experts Group
  6. MIME: Multipurpose Internet Mail Extenion
  7. SIM: Subscriber Identity Module
  8. ZEB: Zero Energy Buildings
  9. RTU: Roof Top Units
  10. SD: Secure Digital
  11. MRO: Maintenance, Reapirs & Operations
  12. JAR: Java Archive
  13. WEC: Wind Energy Converters
  14. ATR: Avions de Transport Régional
  15. GHG: Greenhouse Gases
  16. DSM:  Demand Side Management
  17. BEE: Bureau of Energy Efficiency
  18. CEA: Central Electricity Authority
  19. SERC: State Electricity Regulatory Commissions
  20. RPO: Renewable Purchase Obligation
  21. RPS: Renewable Portfolio Standard
  22. CDM: Clean Development Mechanism
  23. MEPS: Minimum Energy Performance Standards
  24. S&L: Standards and Labeling
  25. DISCOM: Distribution Companies
  26. BASBuilding Automation Systems
  27. ESCO: Energy Servicing Companies
  28. EMCS: Energy Management Control Systems
  29. ECBC: Energy Conservation Building Codes
  30. SDA: State Designated Agency
  31. IPCC: Intergovernmental Panel on Climate Change
  32. UNFCCC: United Nations Framework Convention on Climate Change
  33. GWP: Global Warming Potential
  34. ODS: Ozone Depleting Substances
  35. ROM: Run-of-Mine
  36. ABT: Availability Based Tariffs
  37. OGL: Open General License
  38. FDI: Foreign Direct Investment
  39. MNRE: Ministry of New & Renewable Energy
  40. Mtoe: Million tonnes of oil equivalent
  41. QCS: Quality Control Systems
  42. GSM (mobile): Global System for Mobile
  43. GSM (paper): Grams per square meter
  44. O & M: Operation & Maintenance
  45. ASHRAE: American Society of Heating, Refrigerating & Air-Conditioning Engineers
  46. LEED: Leadership in Energy & Environmental Design
  47. MF: Micro Finance
  48. SHG: Self Help Group
  49. TISS: Tata Institute of Social Sciences
  50. NSS: National Service Scheme
  51. MSW: Masters’ in Social Work
  52. BMC: Bombay Municipal Corporation
  53. SPARC: Society for the Promotion of Area Resource Centre
  54. PROUD: People’s responsible organization of United Dharavi
  55. PMGP: Prime Minister’s Grant Project
  56. IATA: International Air Transport Association
  57. ABO: Algal Biomass Organization
  58. ASTM: American Society of Testing & Materials
  59. DEFRA: Department for Environment, Food and Rural Affairs
  60. ATAG: Air Transport Action Group
  61. A-CDM: Air Collaborative Decision Making
  62. ATC: Air Traffic Control
  63. ANSP: Air Navigation Service Providers
  64. ATM: Air Traffic Management
  65. CFRP: Carbon Fibre Reinforced Plastics
  66. CHP: Combined Heat & Power
  67. HRSG: Heat Recovery Steam Generator
  68. NOIDA:  New Okhla Industrial Development Authority
  69. TMO: Transportation Movement Officer
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