| radome |
a dome-shaped structure that protects a radar antenna from the weather, esp. on aircraft, without affecting reception. |
| radon |
a radioactive chemical element of the inert gas group that has eighty-six protons in each nucleus and that is produced by the radioactive decay of trace amounts of radium in the soil. (symbol: Rn) |
| radula |
in mollusks, a ribbonlike structure in the mouth that bears many rows of teeth. |
| RAF |
abbreviation of "Royal Air Force." |
| raffia |
a type of palm native to Madagascar, or the fiber harvested from its leafstalks, used for rope, basketweaving, and the like. [2 definitions] |
| raffinose |
a white crystalline sugar obtained from the sugar beet, cottonseed, and the like. |
| raffish |
carelessly unconventional or disreputable, sometimes appealingly so. [2 definitions] |
| raffle |
a type of lottery in which participants buy tickets, one of which is drawn to determine the prizewinner. [2 definitions] |
| raft1 |
a flat platform made of buoyant materials such as wood or air-filled barrels, designed to float and often to support or carry people or goods. [6 definitions] |
| raft2 |
(informal) very many; a large quantity. |
| rafter |
one of the usu. sloping timbers that support the covering material of a roof. |
| rag1 |
a scrap or fragment of cloth. [5 definitions] |
| rag2 |
(informal) to tease or scold. |
| rag3 |
a composition of ragtime music. |
| raga |
any of numerous traditional Hindu melodic patterns, each with specific progressions and rhythms, upon which the musician improvises. |
| ragamuffin |
a dirty child clothed in rags and tatters. |
| ragbag |
a bag for collecting or storing rags. [2 definitions] |
| rag doll |
a soft, stuffed doll made out of cloth, sometimes homemade and hand-painted. |
| rage |
intense anger; fury. [8 definitions] |
| ragged |
worn down into rags; torn and tattered. [5 definitions] |
| ragged edge |
the extreme edge, as of a cliff; brink. |