red spider
— Navneord
– Engelsk
~ small web-spinning mite; a serious orchard pest
rock spikemoss
— Navneord
– Engelsk
~ tufted spikemoss forming loose spreading mats; eastern North America
ruby spinel
— Navneord
– Engelsk
~ a spinel used as a gemstone (usually dark red)
Rosa spithamaea
— Navneord
– Engelsk
~ low-growing bristly shrub of southern Oregon and California with creeping rootstocks and usually corymbose flowers
reverse split
— Navneord
– Engelsk
~ a decrease in the number of outstanding shares of a corporation without changing the shareholders' equity
rail-splitter
— Navneord
– Engelsk
~ a laborer who splits logs to build split-rail fences
rough-spoken
— Tillægsord
– Engelsk
~ rude or uncouth in speech
rheumatoid spondylitis
— Navneord
– Engelsk
~ a chronic form of spondylitis primarily in males and marked by impaired mobility of the spine; sometimes leads to ankylosis
runcible spoon
— Navneord
– Engelsk
~ a fork-like spoon with a cutting edge; coined by Edward Lear
roseate spoonbill
— Navneord
– Engelsk
~ tropical rose-colored New World spoonbill
resting spore
— Navneord
– Engelsk
~ a spore of certain algae or fungi that lies dormant; may germinate after a prolonged period
round-spored gyromitra
— Navneord
– Engelsk
~ a gyromitra with a brown puffed up fertile part and a rosy pink fluted stalk and smooth round spores; found on hardwood slash east of the Great Plains
red-spotted purple
— Navneord
– Engelsk
~ similar to the banded purple but with red spots on underwing surfaces
Rocky Mountain spotted fever
— Navneord
– Engelsk
~ caused by rickettsial bacteria and transmitted by wood ticks
Rock Springs
— Navneord
– Engelsk
~ a town of southwest Wyoming near the Utah border
red sprites
— Navneord
– Engelsk
~ atmospheric electricity (lasting 10 msec) appearing as globular flashes of red (pink to blood-red) light rising to heights of 60 miles (sometimes seen together with elves)
red spruce
— Navneord
– Engelsk
~ medium-sized spruce of eastern North America; chief lumber spruce of the area; source of pulpwood
red squirrel
— Navneord
– Engelsk
~ common reddish-brown squirrel of Europe and parts of Asia
red squirrel
— Navneord
– Engelsk
~ of northern United States and Canada
rock squirrel
— Navneord
– Engelsk
~ large grey ground squirrel of rocky areas of the southwestern United States