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.
Boston Massacre: engraving by Paul RevereÂ© SuperstockHis father, Apollos Rivoire (later changed to Revere), was a Huguenot refugee who had come to Boston as a child and had been apprenticed to a silversmith. This craft he taught his son Paul Revere, who became one of Americaâs greatest artists in silver.