| ROLLERDROME | • ROLLERDROME n. (US) a venue for roller-skating to music. |
| ROLLERDROMES | • ROLLERDROME n. (US) a venue for roller-skating to music. |
| ROLLERCOASTER | • rollercoaster n. An amusement ride consisting of a buggy on a track that rises, falls, twists and turns. • rollercoaster n. (Figurative, by extension) Any situation in which there are ups and downs, or violent changes. • roller-coaster n. Alternative spelling of rollercoaster. |
| EXTRACORPOREAL | • extracorporeal adj. Outside the body. • EXTRACORPOREAL adj. occurring or based outside the living body. |
| OTHERWORLDLIER | • OTHERWORLDLY adj. of, relating to, or resembling that of a world other than the actual world, also OTHERWORLDISH. |
| RETROREFLECTOR | • retroreflector n. A retroreflective device or surface. • RETROREFLECTOR n. a device that reflects radiation so that the paths of the reflected rays are parallel to those of the incident rays. |
| ROLLERCOASTERS | • rollercoasters n. Plural of rollercoaster. • roller-coasters n. Plural of roller-coaster. • roller␣coasters n. Plural of roller coaster. |
| CONTRAPROPELLER | • CONTRAPROPELLER n. one of a pair of propellers rotating in opposite directions. |
| ELECTRORECEPTOR | • electroreceptor n. A cell or organ responsible for electroreception. • ELECTRORECEPTOR n. an organ, present in some fishes, that detects electrical discharges. |
| RETROGRESSIONAL | • retrogressional adj. Relating to retrogression. • RETROGRESSIONAL adj. of or like retrogression. |
| RETROPERITONEAL | • retroperitoneal adj. Located behind the peritoneum. • RETROPERITONEAL adj. situated behind the peritoneum. |
| RETROREFLECTION | • retroreflection n. (Physics) reflection in which the reflected rays are parallel to the incident rays. • RETROREFLECTION n. the action or use of a retroreflector. |
| RETROREFLECTORS | • retroreflectors n. Plural of retroreflector. • RETROREFLECTOR n. a device that reflects radiation so that the paths of the reflected rays are parallel to those of the incident rays. |
| RETROVIROLOGIES | Sorry, definition not available. |
| ROLLERCOASTERED | • ROLLERCOASTER v. to direct or cause to move with great speed, esp. in a set direction. |
| THERMOREGULATOR | • thermoregulator n. Any organism that carries out thermoregulation. • thermoregulator n. A device that assists with thermoregulation, e.g. for a newborn infant. • THERMOREGULATOR n. a device, such as a thermostat, for the regulation of temperature. |