birth rate
— Navneord
– Engelsk
～ the ratio of live births in an area to the population of that area; expressed per 1000 population per year
bond rating
— Navneord
– Engelsk
～ an evaluation by a rating company of the probability that a particular bond issue will default; "the bonds of highest quality are said to have bond ratings of AAA"
banded rattlesnake
— Navneord
– Engelsk
～ widely distributed in rugged ground of eastern United States
Battle of Ravenna
— Navneord
– Engelsk
～ a battle between the French and an alliance of Spaniards and Swiss and Venetians in 1512
beta ray
— Navneord
– Engelsk
～ radiation of beta particles during radioactive decay
butterfly ray
— Navneord
– Engelsk
～ a stingray with a short tail and a broad fin
breeder reactor
— Navneord
– Engelsk
～ a nuclear reactor that produces more fissile material than it burns
beta receptor
— Navneord
– Engelsk
～ receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)
beta-adrenergic receptor
— Navneord
– Engelsk
～ receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)
brick red
— Navneord
– Engelsk
～ a bright reddish-brown color
beating-reed instrument
— Navneord
– Engelsk
～ a musical instrument that sounds by means of a vibrating reed
bur reed
— Navneord
– Engelsk
～ marsh plant having elongated linear leaves and round prickly fruit
bur-reed family
— Navneord
– Engelsk
～ coextensive with the genus Sparganium
barrier reef
— Navneord
– Engelsk
～ a long coral reef near and parallel to the shore
Babinski reflex
— Navneord
– Engelsk
～ extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front; normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons
birth-control reformer
— Navneord
– Engelsk
～ a social reformer who advocates birth control and family planning
board of regents
— Navneord
– Engelsk
～ a committee of university officers who have general supervision over the welfare and conduct of students
biogeographical region
— Navneord
– Engelsk
～ an area of the Earth determined by distribution of flora and fauna
Bluegrass Region
— Navneord
– Engelsk
～ an area in central Kentucky noted for its bluegrass and thoroughbred horses
bog rein orchid
— Navneord
– Engelsk
～ orchid with spikes of many fragrant white flowers on erect leafy stems; of wet or boggy ground through most of the West and northern North America