ACCELERATION OF GRAVITY

: acceleration of a body falling in a vacuum under the influence of the earth's gravity expressed as the rate of increase of velocity per unit of time, its value at sea level in latitude 45 degrees being 980.616 centimeters per second per second which is designated as g 45 as distinguished from g 0 = 980.665 centimeters per second per second, an arbitrary value adopted in 1901 by the International Committee of Weights and Measures — abbr. g