- An albuminous body, insoluble in water, but soluble in
dilute solutions of salt. It is present in the red blood corpuscles
united with haematin to form haemoglobin. It is also found in the
crystalline lens of the eye, and in blood serum, and is sometimes
called crystallin. In the plural the word is applied to a group of
proteid substances such as vitellin, myosin, fibrinogen, etc., all
insoluble in water, but soluble in dilute salt solutions.
Definition
[ n.]