euglobulin

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of a class of simple proteins that are soluble in dilute salt solutions and insoluble in distilled water.

from The Century Dictionary.

• noun One of the supposed components of serum globulin which is insoluble in water. See also pseudoglobulin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biochemistry A fraction of serum proteins obtained as a precipitate by adjusting salt levels and pH