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 Corbett. Thomas P. Boston Corbett (January 29, 1832 â presumed dead c. September 1, 1894) was a Union Army soldier who shot and killed President Abraham Lincoln's assassin, John Wilkes Booth. Corbett was initially arrested for disobeying orders, but was later released and was largely considered a hero by the media and the public.