Basophilia Health Dictionary

The blueish appearance under the microscope of immature red blood corpuscles when stained by certain dyes. This appearance, with the blue areas collected in points, is seen in lead poisoning and the condition is called punctate basophilia. The term basophilia may also mean an increase in the numbers of basophil cells in the blood.

n. 1. a property of a microscopic structure whereby it shows an affinity for basic dyes. 2. an increase in the number of certain white blood cells (*basophils) in the blood, which may occur in a variety of blood diseases.