a parallelepiped bounded by six similar faces (either rhombuses or parallelograms)
regular polyhedron
Noun
any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
regular convex solid
Noun
any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
regular convex polyhedron
Noun
any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
regular tetrahedron
Noun
a tetrahedron with four equilateral triangular faces
regular hexahedron
Noun
a hexahedron with six equal squares as faces
regular dodecahedron
Noun
a dodecahedron with twelve regular pentagons as faces
regular octahedron
Noun
an octahedron with eight equilateral triangles as faces
rapture
Noun
a state of being carried away by overwhelming emotion
rapture
Noun
a state of elated bliss
regular icosahedron
Noun
an icosahedron with twenty equilateral triangles as faces
raptus
Noun
a state of being carried away by overwhelming emotion
raptus
Noun
a sudden occurrence (or recurrence) of a disease
rule of law
Noun
a state of order in which events conform to the law
realness
Noun
the state of being actual or real
respiratory acidosis
Noun
acidosis resulting from reduced gas exchange in the lungs (as in emphysema or pneumonia)
respiratory alkalosis
Noun
alkalosis resulting from increased gas exchange in the lungs (as in hyperventilation associated with extreme anxiety or aspirin intoxication or metabolic acidosis)
red alert
Noun
the highest level of alert when an attack by the enemy seems imminent (or more generally a state of alert resulting from imminent danger)
ravenousness
Noun
excessive desire to eat
rapid eye movement sleep
Noun
a recurring sleep state during which dreaming occurs
REM sleep
Noun
a recurring sleep state during which dreaming occurs
rapid eye movement
Noun
a recurring sleep state during which dreaming occurs
regional anesthesia
Noun
loss of sensation in a region of the body produced by application of an anesthetic agent to all the nerves supplying that region (as when an epidural anesthetic is administered to the pelvic region during childbirth)
regional anaesthesia
Noun
loss of sensation in a region of the body produced by application of an anesthetic agent to all the nerves supplying that region (as when an epidural anesthetic is administered to the pelvic region during childbirth)
ragpicker's disease
Noun
a form of anthrax infection acquired by inhalation of dust containing Bacillus anthracis
ragsorter's disease
Noun
a form of anthrax infection acquired by inhalation of dust containing Bacillus anthracis
raptus hemorrhagicus
Noun
seizure caused by a sudden profuse hemorrhage
roots
Noun
the condition of belonging to a particular place or group by virtue of social or ethnic or cultural lineage
rheumatism
Noun
any painful disorder of the joints or muscles or connective tissues
rheumatism
Noun
a chronic autoimmune disease with inflammation of the joints and marked deformities
renal disorder
Noun
a disease affecting the kidneys
renal failure
Noun
an inability of the kidneys to excrete wastes and to help maintain the electrolyte balance
renal insufficiency
Noun
insufficient excretion of wastes by the kidneys
renal lithiasis
Noun
the presence of kidney stones (calculi) in the kidney
rhinostenosis
Noun
narrowing of the passages in the nasal cavities
reflex epilepsy
Noun
a form of epilepsy in which attacks are induced by peripheral stimulation
receptive aphasia
Noun
aphasia characterized by fluent but meaningless speech and severe impairment of the ability understand spoken or written words
ratbite fever
Noun
either of two infectious diseases transmitted to humans by the bite of a rat or mouse
rickettsial disease
Noun
infectious disease caused by ticks or mites or body lice infected with rickettsial bacteria
rickettsiosis
Noun
infectious disease caused by ticks or mites or body lice infected with rickettsial bacteria
rubeola
Noun
an acute and highly contagious viral disease marked by distinct red spots followed by a rash
rat typhus
Noun
acute infection caused by rickettsia and transmitted by the bite of an infected flea
rubella
Noun
a contagious viral disease that is a milder form of measles lasting three or four days
respiratory distress syndrome of the newborn
Noun
an acute lung disease of the newborn (especially the premature newborn)
roseola infantum
Noun
a viral disease of infants and young children
roseola infantilis
Noun
a viral disease of infants and young children
rickettsialpox
Noun
mild infectious rickettsial disease caused by a bacterium of the genus Rickettsia transmitted to humans by the bite a mite that lives on rodents
relapsing fever
Noun
marked by recurring high fever and transmitted by the bite of infected lice or ticks