| No. | Item | Definition |
|---|---|---|
| 1. | a.m. | Before noon. |
| 2. | AD | In the year of our Lord. |
| 3. | AED | Automated external defibrillator. |
| 4. | APR | Annual percentage rate. |
| 5. | ASAP | As soon as possible. |
| 6. | ATM | Automated teller machine. |
| 7. | BA | Bachelor of Arts. |
| 8. | BC | Before Christ. |
| 9. | BCE | Before the Common Era. |
| 10. | BMI | Body mass index. |
| 11. | BP | Blood pressure. |
| 12. | BSc | Bachelor of Science. |
| 13. | CE | Common Era. |
| 14. | CEO | Chief executive officer. |
| 15. | CFO | Chief financial officer. |
| 16. | COO | Chief operating officer. |
| 17. | CPI | Consumer price index. |
| 18. | CV | Curriculum vitae; a summary of qualifications and experience. |
| 19. | DC | Direct current. |
| 20. | DIY | Do it yourself. |
| 21. | DNA | Deoxyribonucleic acid; the molecule carrying genetic information. |
| 22. | DOB | Date of birth. |
| 23. | Dr. | Doctor. |
| 24. | e.g. | For example. |
| 25. | ECG | Electrocardiogram; a recording of the heart’s electrical activity. |
| 26. | ER | Emergency room. |
| 27. | ETA | Estimated time of arrival. |
| 28. | etc. | And so on. |
| 29. | EU | European Union. |
| 30. | FAQ | Frequently asked questions. |
| 31. | FBI | Federal Bureau of Investigation. |
| 32. | FDA | Food and Drug Administration. |
| 33. | FYI | For your information. |
| 34. | GDP | Gross domestic product. |
| 35. | GIF | Graphics Interchange Format. |
| 36. | GMT | Greenwich Mean Time. |
| 37. | GPA | Grade point average. |
| 38. | GPS | Global Positioning System. |
| 39. | HDMI | High-Definition Multimedia Interface. |
| 40. | HIV | Human immunodeficiency virus. |
| 41. | HQ | Headquarters. |
| 42. | HR | Human resources. |
| 43. | HTML | Hypertext Markup Language. |
| 44. | i.e. | That is; in other words. |
| 45. | ICU | Intensive care unit. |
| 46. | ID | Identification. |
| 47. | Inc. | Incorporated. |
| 48. | IOU | I owe you; a written acknowledgment of debt. |
| 49. | IPO | Initial public offering. |
| 50. | JPEG | Joint Photographic Experts Group; an image format. |
| 51. | Jr. | Junior. |
| 52. | kWh | Kilowatt-hour; a unit of energy. |
| 53. | LED | Light-emitting diode. |
| 54. | LLC | Limited liability company. |
| 55. | Ltd. | Limited. |
| 56. | MA | Master of Arts. |
| 57. | MBA | Master of Business Administration. |
| 58. | MD | Doctor of Medicine. |
| 59. | Mr. | Mister; a title used before a man’s name. |
| 60. | MRI | Magnetic resonance imaging. |
| 61. | Mrs. | A title traditionally used for a married woman. |
| 62. | MSc | Master of Science. |
| 63. | N/A | Not applicable or not available. |
| 64. | NASA | National Aeronautics and Space Administration. |
| 65. | NATO | North Atlantic Treaty Organization. |
| 66. | NGO | Nongovernmental organization. |
| 67. | OS | Operating system. |
| 68. | OTC | Over the counter; available without a prescription. |
| 69. | p.m. | After noon. |
| 70. | P.O. box | Post office box. |
| 71. | P.S. | Postscript; an additional note after a message. |
| 72. | PhD | Doctor of Philosophy. |
| 73. | PIN | Personal identification number. |
| 74. | POS | Point of sale. |
| 75. | PR | Public relations. |
| 76. | Prof. | Professor. |
| 77. | QR | Quick response; used in scannable QR codes. |
| 78. | R&D | Research and development. |
| 79. | RAM | Random access memory. |
| 80. | RNA | Ribonucleic acid; a molecule involved in gene expression. |
| 81. | ROI | Return on investment. |
| 82. | RSVP | Please respond to the invitation. |
| 83. | SMS | Short Message Service. |
| 84. | Sr. | Senior. |
| 85. | STI | Sexually transmitted infection. |
| 86. | SUV | Sport utility vehicle. |
| 87. | TBA | To be announced. |
| 88. | TBD | To be determined. |
| 89. | UK | United Kingdom. |
| 90. | UN | United Nations. |
| 91. | UNESCO | United Nations Educational, Scientific and Cultural Organization. |
| 92. | UNICEF | United Nations Children’s Fund. |
| 93. | US | United States. |
| 94. | USB | Universal Serial Bus. |
| 95. | VAT | Value-added tax. |
| 96. | VPN | Virtual private network. |
| 97. | vs. | Versus; against or compared with. |
| 98. | WHO | World Health Organization. |
| 99. | WWW | World Wide Web. |
| 100. | ZIP | Zone Improvement Plan; the US postal code system. |