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.
Introduction. The Boston Massacre occurred on March 5, 1770. A squad of British soldiers, come to support a sentry who was being pressed by a heckling, snowballing crowd, let loose a volley of shots. Three persons were killed immediately and two died later of their wounds; among the victims was Crispus Attucks, a man of black or Indian parentage.