Science / Tides and Currents / Coastal Boundary: The mean high water line (MHWL) or mean higher high water line (MHHWL) when tidal lines are used as the coastal boundary. Also, lines used as boundaries inland of and measured from (or points thereon) the MHWL or MHHWL. See marine boundary.
Boundary Noun Synonyms: border(s), limit(s), frontier(s), bound(s), confines, perimeter
Science / Tides and Currents / Marine Boundary: The mean lower low water line (MLLWL) when used as a boundary. Also, lines used as boundaries seaward of and measured from (or points thereon) the MLLWL. See coastal boundary. MORE
Science / Biology / Divergent Plate Boundary: The boundary between two tectonic plates that are moving apart. MORE
Science / Biology / Convergent Plate Boundary: The boundary between two plates that are moving toward one another. MORE
Science / Chemistry / Phase Boundary: A phase boundary is a surface where two samples of matter with different properties are in contact. The surface of a gas bubble in water or the surface of a crystal are examples of phase boundaries. MORE
Business / Agriculture / Urban Growth Boundary: An agreed-upon line that allows development and urban-type services on one side and retains open space, agriculture, and other less intense uses on the other. These lines typically are set by local go MORE