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.
History >> American Revolution. The Boston Massacre occurred on March 5, 1770 when British soldiers in Boston opened fire on a group of American colonists killing five men. Townshend Acts. Prior to the Boston Massacre the British had instituted a number of new taxes on the American colonies including taxes on tea, glass, paper, paint, and lead. These taxes were part of a group of laws called the Townshend Acts.