Medical Dictionary


adj \ˈō-pən\

Medical Definition of OPEN

a :  not covered, enclosed, or scabbed over <an open lesion> <an open running ulcer> b :  not involving or encouraging a covering (as by bandages or overgrowth of tissue) or enclosure <open treatment of burns> c :  relating to or being a compound fracture d :  being an operation or surgical procedure in which an incision is made such that the tissues and organs are fully exposed—compare open-heart
:  shedding the infective agent to the exterior <open tuberculosis>—compare closed 3
a :  unobstructed by congestion or occlusion <open sinuses> b :  not constipated <open bowels>
:  using a minimum of physical restrictions and custodial restraints on the freedom of movement of the patients or inmates <an open psychiatric ward>
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