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.
For the baseball event nicknamed the Boston Massacre, see Yankees â Red Sox rivalry. For the 2013 terrorist attack, see Boston Marathon bombing. This famous depiction of the event was engraved by Paul Revere (copied from an engraving by Henry Pelham), colored by Christian Remick, and printed by Benjamin Edes.