rawhide |
untanned leather, esp. cattle skin. [2 definitions] |
rawin |
the monitoring of upper-air wind currents using a balloon fitted with radar or a radio direction-finding device (acronym for "radio/wind"). |
raw material |
material or a product in its natural or original state, before processing or assembling. |
raw silk |
silk that has been taken directly from the cocoon. |
ray1 |
a thin beam of radiation, esp. light. [3 definitions] |
ray2 |
any of various fishes having cartilaginous skeletons, flattened bodies, large pectoral fins, and long narrow tails. |
rayed |
having, or being in the form of, rays or raylike extensions. |
ray flower |
any of the flowers around the border of the head of a composite plant such as the daisy. |
Rayleigh wave |
a wave on the surface of a solid, such as that caused on the surface of the earth by an earthquake. |
Raynaud's disease |
a vascular disease causing numbness and discoloration of the tips of the hands and feet, often caused by exposure to cold or by stress. |
rayon |
a thread made by converting a solution of a natural pulp, usu. cellulose, into filament by extruding through spinnerets. [2 definitions] |
raze |
to knock down or tear down (a structure); level. |
razor |
an instrument that has a very sharp, replaceable blade or blades and is used for shaving away body or facial hair. [4 definitions] |
razorback |
a wild hog of the southeastern United States, descended from domestic stock and having a sharp ridge on the back. [2 definitions] |
razor clam |
any of various burrowing clams having long, narrow, rectangular shells. |
razor-sharp |
extremely sharp. [2 definitions] |
razzle-dazzle |
(informal) a flashy display used to deceive or bewilder, esp. as a strategy in football. |
razzmatazz |
(informal) flashy or deceptive action or language; razzle-dazzle. [2 definitions] |
Rb |
symbol of the chemical element rubidium. |
rBGH |
abbreviation of recombinant bovine growth hormone, a genetically engineered hormone injected into dairy cows to increase their milk production. |
RBI |
abbreviation of "run batted in" or "runs batted in." |