| root hair |
a thin, hairlike, permeable outgrowth from a root that absorbs water and minerals from the soil. |
| rootless |
being without roots. [2 definitions] |
| rootlet |
a small root or branch of a root. |
| root mean square |
the square root of the arithmetic mean of the squares in a given set of numbers. |
| rootstock |
an underground, rootlike, usu. horizontal stem from which shoots grow upward and roots downward; rhizome. [2 definitions] |
| rooty |
having many roots. [2 definitions] |
| rope |
a strong, flexible, usu. thick and heavy line of twisted or braided hemp, nylon, or similar material. [8 definitions] |
| ropewalk |
a long narrow shed or building in which ropes are made. [2 definitions] |
| ropewalker |
one who walks or performs on a tightrope, esp. a paid entertainer; tightrope walker. |
| ropy |
like a rope or ropes. [2 definitions] |
| roque |
a variety of croquet played on a hard court surrounded by a raised rim or low wall. |
| Roquefort |
trademark for a strong cheese of sheep's or goat's milk, with veins of bluish mold. |
| roquet |
to knock (one's croquet ball) against another ball. [2 definitions] |
| rorqual |
any of a related group of whales, such as the blue whale, that have lengthwise grooves on the underside and a small, well-developed dorsal fin; finback. |
| Rorschach test |
a psychological test in which a profile of the patient is formed on the basis of the patient's subjective interpretation of standardized designs that resemble ink blots. |
| rosacea |
a chronic skin condition affecting the face that is characterized by redness, pimples, swelling, and dilation of blood vessels; acne rosacea. |
| rosaceous |
of or belonging to the rose family of plants. [2 definitions] |
| Rosa Parks |
U.S. civil rights activist and icon, whose arrest in 1955 in Montgomery, Alabama, for refusing to obey segregation laws on a municipal bus inspired a wave of civil rights activism; born Rosa Louise McCauley (b.1913--d.2005). |
| rosary |
a prescribed series of prayers recited by Roman Catholics to the Virgin Mary. [3 definitions] |
| rosé |
a pale pink, light table wine made from red grapes from which the skins have been removed before fermentation is completed. |
| rose1 |
any of numerous wild or cultivated shrubs or vines that have compound leaves and usu. thorny stems and bear showy, usu. fragrant flowers composed of many petals. [7 definitions] |