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.
ET] At least two people have been killed and 22 are injured in the apparent bombings near the finish line of the Boston Marathon, Boston police say. An explosion rips through a location near the finish line of the Boston Marathon. [Update, 4:02 p.m.T] At least 132 people-including eight children-have been injured in the bombings, according to Boston-area hospitals. Boston police earlier said that two people were killed. At least 17 of the injured are in critical condition, and at least 25 are in serious condition, area hospitals said.