EQUATOR n.
the days and nights are of equal length; hence called also the equinoctial, and on maps, globes, etc., the equinoctial line. Equator of the sun or of a planet (Astron.), the great circle whose plane passes through through the center of the body, and is perpendicular to its axis of revolution. -- Magnetic equator. See…
FINGER n.
us) resembling a finger in form. -- Finger sponge (Zoöl.), a sponge having finger-shaped lobes, or branches. -- Finger stall, a cover or shield for a finger. -- Finger steel, a steel instrument for whetting a currier's knife. To burn one's fingers. See under Burn. -- To have a finger in, to be concerned in. [Colloq…
GEOLOGY n.
The science which treats: (a) Of the structure and mineral constitution of the globe; structural geology. (b) Of its history as regards rocks, minerals, rivers, valleys, mountains, climates, life, etc.; historical geology. (c) Of the causes and methods by which its structure, features, changes, and conditions have been…