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.
Crispus Attucks, the first martyr of the Boston Massacre in 1770, was probably born near Framingham, Massachusetts, a Christianized and multitribal town of Indians, whites, and blacks, in 1723.n November 27, 1770, the soldiers were tried in a Boston court for murder. During the trial it was reported that Attucks fell first with one bullet lodged in his right chest. He was shot by the British soldier William Warren.