Alternative spelling of endscraper

A satellite orbit around the Earth within the altitude range of 200 - 2000 km, in which a satellite can communicate with Earth with a small time lag and energy consumption. Abbreviation: LEO.

(US) An election held every four years to elect members of Congress in years the president is not also elected.

(chemistry) Any synthetic element having an atomic number greater than that of uranium.

Alternative spelling of earthshattering.

(chemistry, physics) The energy required to initiate a reaction. For example, the flame from the fuse of a firecracker provides a small initial amount of energy, after which the explosive reaction proceeds by itself, releasing a considerably larger quantity of energy. A small push given to a stable but top-heavy object may cause it to fall over; the potential energy released during the fall was present in the system all along but could not be realized as long as the object was upright and balanced.

(ecology) The negative population growth observed at low population densities.

(chiefly UK, Ireland) The houses at each end of a line of rowhouses or terraced houses.

Located at the end of a line of rowhouses.

An official region of England (one of nine, since 1994), within the United Kingdom. Comprises Northumberland, Tyne and Wear and County Durham as well as a small part of North Yorkshire.