| dry well [`drī ´wel] CIVIL ENGINEERING 1. A well that has been completely drained. 2. An excavated well filled with broken stone and used to receive drainage when the water percolates into the soil. 3. Compartment of a pumping station in which the pumps are housed. NUCLEONICS The first containment tank surrounding a water-cooled nuclear reactor that uses the pressure-suppressing containment system. |