Primary(redirected from primary rumen cycle)
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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
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.