Category: R

One which is radially symmetrical, where± any straight line drawn through the centre produces two mirror images.  

The (usually) strap-shaped spreading florets found in some of the Daisy family, occurring either around the edge of the flower-head (as in a Daisy) or forming the whole of the flower-head (as in a Dandelion).  

Isotopes of iodine used in the investigation and treatment of hyperthyroidism. Iodine- 12 3 is used for most scans; iodine- 1 3 1 is used for treatment. An isotope of iodine with an atomic weight of 131; used in diagnosis and treatment of thyroid disorders and in the treatment of toxic goiter and thyroid carcinoma.…

Hypertension that does not appear to respond to lifestyle changes and drug treatment.  

Narrowing of an artery to a kidney that, if severe, may cause hypertension by increasing renin. The renin then generates angiotensin, a powerful constrictor of arterioles. An obstruction in one or both arteries that supply the kidneys; a relatively uncommon cause of hypertension. In young women the cause is usually fibromuscular dysplasia of one or…

Related to the kidney. Having to do with the kidneys.      

Growing on or among rocks.  

Intruded endosperm in a seed, formed by the infloding of the inner layer of the seed coat, as in nutmeg.  

Folding in a flower bud in which the petals are touching with the edges valvate and reflexed.  

Turned back on itself.