patent

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patent patent ductus arteriosus patent medicine patent period

Main Entry: pa·tent
Pronunciation: pat-nt, British usually pt-
Function: noun
1 : protected by a trademark or a trade name so as to establish proprietary rights analogous to those conveyed by a patent : PROPRIETARY <patent drugs>
2 /pt-/ : affording free passage : being open and unobstructed <the nose patent with no pathological discharge -- Journal of the American Medical Association>