Engineering Abbreviations and Acronyms
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
'Ra' to 'Rh', 'Ri' to 'Rz'
| racon | - | radar beacon |
| rad | - | radian |
| RAD | - | radiation absorbed dose |
| RAID | - | redundant array of independent discs |
| Radar | - | radio detection and ranging |
| RADHAZ | - | electromagnetic radiation hazards |
| RADINT | - | Radar Intelligence |
| RAM | - | Random Access Memory [Manufacturers of RAM IC's] |
| RAM | - | reliability, availability, and maintainability |
| R&D | - | Research and Development |
| RAS | - | Row Address Strobe [memory] |
| RbXO | - | rubidium-crystal oscillator [RbXO Manufacturers] |
| RC | - | reflection coefficient, Radio Control, resource controller |
| RCC | - | radio common carrier |
| RCVR | - | receiver |
| RCD | - | Residual Current Device [RCD Graphic] |
| R/D | - | Resolver to Digital [converter] |
| RD | - | Read |
| RDF | - | radio-direction finding |
| RDIMM | - | Registered DIMM [Memory Module Manufacturers] |
| RDRAM | - | Rambus DRAM [Memory IC Manufacturers] |
| RDY | - | Ready |
| REF | - | Reference |
| RET | - | Reliability Enhanced Testing |
| rf | - | radio frequency |
| RF | - | range finder |
| RFC | - | Radio Frequency Choke [RFC Manufacturers] |
| RFI | - | Radio Frequency Interference |
| RFID | - | Radio Frequency Identification |
| RFP | - | Request For Proposal |
| RFQ | - | Request For Quotation |
| RG | - | Radio Grade [Cable Terms] |
| RGB | - | Red-Green-Blue [Video Interface] |
| RH | - | Relative Humidity |
| RHA | - | Radiation Hardness Assurance |
| RHR | - | Radio Horizon Range |
