Freebase(0.00 / 0 votes)Rate this definition: Hydraulic conductivity. Hydraulic conductivity, symbolically represented as, is a property of vascular plants, soil or rock, that describes the ease with which a fluid can move through pore spaces or fractures.
Crispus Attucks was an African-American man killed during the Boston Massacre, making him the first casualty of the American Revolution.
The Massachusetts college student wanted in the Boston Marathon bombing was captured wounded but alive after hiding out in a boat parked in a backyard on Friday evening. The arrest of Dzhokhar Tsarnaev, 19, signaled the end of five days of terror set-off by the double bombing at the marathon finish line.