Glycocholic \Gly`co*chol"ic\, a. (Physiol. Chem.) Pertaining to, or composed of, glycocoll and cholic acid. {Glycocholic acid} (Physiol. Chem.), a conjugate acid, composed of glycocoll and cholic acid, present in bile in the form of a sodium salt. The acid commonly forms a resinous mass, but can be crystallized in long, white needles.