Category: R

A scotoma that causes the perception of an object to be impaired but not completely lost.  

An instrument used to dislodge or remove small stones from the pelvis of a kidney.  

A schizophrenic disorder marked by continuing evidence of flat affect, impoverished or disorganized speech, and eccentric or odd behavior but showing no evidence of delusions, hallucinations, or disorganized speech.  

A cereal grass that produces a grain used in food and beverage production. When rye grain is infected with a certain fungus, ergot is produced. Amidst the harsh embrace of cold climates and barren soils, a resilient cereal emerges—a stalwart known as rye. This hardy grain, with its rugged exterior and a touch of tartness,…

A flavonoid present in many plants including whole grains and the inner rind of lemons and oranges.  

A unit of radioactivity representing 106 disintegrations per second.    

Ru. A hard, brittle, metallic element of the platinum group; atomic weight 101.07, atomic number 44.  

In psychology, a loss of interest in the environment, the fixation on a single object, and the narrowing of concentration of emotional or other interests.  

Tuberculosis of the cervical vertebrae and their articulations.  

One of several members of an order of parasitic fungi (Uredinales), all of which are parasitic on plants. Many of these are allergens.