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PRIMARY. That which is first or principal; as primary evidence, or that evidence which is to be admitted in the first instance, as distinguished from secondary evidence, which is allowed only when primary evidence cannot be had.
     2. A primary obligation is one which is the principal object of the contract; for example, the primary obligation of the seller is to deliver the thing sold, and to transfer the title to it. It is distinguished from the accessory or secondary obligation to pay damages for not doing so. 1 Bouv. Inst. n. 702.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
In the colon, primary bile acids regulate growth of Clostridium difficile.
This approach to quantifying 3[beta]-hydroxy-[[DELTA].sup.5]bile acids cannot be used to monitor response to primary bile acid therapy in patients with HSD3B7 deficiency, the goal of which is to demonstrate a reduction or disappearance of these hepatotoxic atypical bile acids in the urine.
investigated the long-term effect of oral CA for hereditary defects of primary bile acid synthesis and suggested it was safe and effective for 3[sz]-HSD-deficient patients.
Primary bile acids are made in the liver and travel through the intestinal tract.