| retroactive |
going into operation or effect as of a previous date, or in respect to past events or circumstances. |
| retrocede1 |
to go or move back; recede; retire. |
| retrocede2 |
to surrender or give back to (territory). |
| retrofire |
to ignite (a rocket engine that is placed opposite the direction of current flight) for the purpose of slowing down or adjusting direction. |
| retrofit |
to modify design, construction, or equipment (of an aircraft, automobile, or the like) that is already in service in order to include later improvements. [2 definitions] |
| retroflex |
bent or turned backward. [2 definitions] |
| retroflexion |
the state or quality of being retroflex. |
| retrograde |
moving or tending to move in a backward direction; retreating. [4 definitions] |
| retrograde amnesia |
amnesia about events that occurred just before the onset of the amnesia. |
| retrogress |
to return to a former, usu. inferior condition; degenerate; revert. |
| retrorocket |
a small rocket engine mounted so that its direction of thrust is opposite to the direction of the main rocket, used for slowing down, changing direction, or the like. |
| retrorse |
turned backward or downward, as some petals. |
| retrospect |
reflection on the past or on past events or achievements. |
| retrospection |
the act, an instance, or the ability of reviewing past events. [2 definitions] |
| retrospective |
looking back on or thinking of the past. [3 definitions] |
| retroussé |
turned upward, as a nose. |
| retrovirus |
any of a group of related RNA viruses, such as those that cause leukemia and AIDS, in which a reversal of genetic transcription occurs, from RNA to DNA rather than from DNA to RNA. |
| retry |
combined form of try. |
| retsina |
a Greek wine with pine resin added to it. |
| retune |
combined form of tune. |
| return |
to go or come back, as to a previous place or circumstance. [23 definitions] |