Category: A

Member of the order Aphididae of small sapsucking insects with delicate translucent bodies, often infesting foliage in large numbers and weakening the plant. Aphids secrete a sugary ‘honeydew’ eaten by ants, which in return protect the aphids from other predators.  

A type of greenhouse designed to meet the specialized requirements of alpines, usually kept cool in summer by shading the glass, and unheated in winter but providing protection from severe frosts. Alternate (of leaves) Arising, one by one, first from one side of the stem and then the other. Whether the leaves are alternate or…

Soil with a pH higher than 7.0.  

Soil with a pH lower than 7.0. Containing relatively little lime, to give a pH reaction of less than 7, the sort of soil needed to grow such plants as azaleas, camellias, rhododendrons and the like, and in which hydrangeas flower blue. A very acid soil is described as ‘sour’.  

One of the bony projections which form the zygomatic arch.  

A surgical operation to treat Fallot’s tetralogy, in which the right pulmonary artery is joined to the ascending aorta [After David James Waterston (1910-85), paediatric surgeon in London, UK].  

An ulcer in the leg, caused by varicose veins or by a blood clot.  

The surgical removal of one ovary.  

One of two muscles in the lower leg running from the tibia to the foot. Either of two muscles in the leg, extending from the tibia to the metatarsal bones of the foot. The tibialis anterior turns the foot inward and flexes the toes backward. Situated behind it, the tibialis posterior extends the toes and…

To bring something which is frozen back to usual temperature.