| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Rathite-I | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rathite-II | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rathite-IV | No definition provided | Ryan McGranaghan | 2023.04.16 |
| ratio | No definition provided | Ryan McGranaghan | 2023.04.16 |
| ratio | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ratio | The relative magnitudes of two quantities. | Ryan McGranaghan | 2023.04.16 |
| Ratio and proportion | No definition provided | Christopher Rauch | 2023.12.01 |
| Rationalism | No definition provided | Christopher Rauch | 2023.12.01 |
| Rationalism: Realism | No definition provided | Christopher Rauch | 2023.12.01 |
| Rations | No definition provided | Christopher Rauch | 2023.12.01 |
| ratio scale | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ratisbon, Diet of, 1532 | No definition provided | Christopher Rauch | 2023.12.01 |
| Ratitae | No definition provided | Christopher Rauch | 2023.12.01 |
| Rats | No definition provided | Christopher Rauch | 2023.12.01 |
| Rats as carriers of contagion | No definition provided | Christopher Rauch | 2023.12.01 |
| Rats--Extermination | No definition provided | Christopher Rauch | 2023.12.01 |
| Rattle, Notched | No definition provided | Christopher Rauch | 2023.12.01 |
| Rattler: Single-axis, horizontal shaker | University of Texas at Austin earthquake engineering mobile shaker equipment. A horizontal (shear-wave) vibrator that is a 1980 Mertz Model 13-609 mounted on an off-road vehicle. Has a frequency-force response which is nearly identical to T-Rex in the shear mode. Can be used in conjunction with other mobile shaker equipment to create customized testing configurations. | Ashley Adair | 2023.03.27 |
| Rattlesnake | No definition provided | Christopher Rauch | 2023.12.01 |
| Rattlesnake (Ship) | No definition provided | Christopher Rauch | 2023.12.01 |