Related Words

Divergent Plate Boundary: The boundary between two tectonic plates that are moving apart.

Plateau Basalt: A sequence of parallel to subparallel basalt flows that were formed during a geologically brief interval of time and which covered an extensive geographic area. Thought to have formed from s . . . View Full Definition

Platelets: In vertebrates, cell fragments that bud off from the megakaryocytes in the bone marrow; carry chemicals needed for blood clotting. Cell fragment functioning in blood clotting.

Plates: Early photographic glass plates coated with emulsion.

Plate Tectonics: The movement of the plates that make up the surface of the Earth. The revolutionary paradigm in geology that the earths crust is composed of rigid segments (plates) in constant (although con . . . View Full Definition

Quarterplate: Negative or print format measuring 3 ¼ x 4 ¼ inches. It's one quarter the size of a full plate (8 ½ x 6 ½ inches).

Plate Camera: Camera designed to take glass plates but often adapted to take cut film.

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.

Parallel Plate Intake: Intake of a stilling or protective well with two parallel plates attached below. The plates are typically three times the diameter of the well and are spaced three inches apart. The plates a . . . View Full Definition

Pindeck (Plate): The area upon which the pins are set.