Definition of Acid phosphatase Acid phosphatase: An enzyme that
acts to liberate phosphate under acidic conditions and is made
in the liver, spleen, bone marrow, and prostate gland.
Abnormally high serum levels of acid phosphatase may indicate
infection, injury, or cancer of the prostate.Source: MedTerms™
Medical Dictionary Last Editorial Review: 3/19/2012 Get the
latest treatment options.