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.
Attucks was apparently in the front of the line of the aroused citizens, urging them on. The British troops responded with a barrage of rifle fire. Crispus Attucks was the first to fall in the celebrated Boston Massacre of 1770. Four other Americans died that night from the action. Samuel Adams used the incident to incite the colonists to further rebellion.