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.
Tension over the presence of British troops in Boston led to the Boston Massacre, the first episode which resulted in the loss of life. Four Bostonians were killed when Redcoats fired into an angry mob.