through drainage


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through drain·age

drainage obtained by the passage of a perforated tube, open at both extremities, through a cavity. In addition, the cavity can be washed out by a solution passed through the tube.

through drain·age

(thrū drān'ăj)
Removal of liquid obtained by the passage of a perforated tube, open at both extremities, through a cavity; in addition, the cavity can be washed out by a solution passed through the tube.