See also:

• EQUATOR (Late Lat. aequator, from aequare, to make equal)

EQUATOR (See also:

• LATE

Late See also:

• LAT

Lat. aequator, from aequare, to make equal)  , in See also:

• GEOGRAPHY (Gr. yil, earth, and ypiickty, to write)

geography, that See also:

• GREAT

great circle of the See also:

• EARTH
• EARTH (a word common to Teutonic languages, cf. Ger. Erde, Dutch aarde, Swed. and Dan. jord; outside Teutonic it appears only in the Gr. 'pq'e, on the ground; it has been connected by some etymologists with the Aryan root ar-, to plough, which is seen in
• EARTH, FIGURE OF
• EARTH, FIGURE OF THE

earth, equidistant from the two poles, which divides the See also:

• NORTHERN

northern from the See also:

• SOUTHERN

southern hemisphere and lies in a See also:

• PLANE

plane perpendicular to the See also:

• AXIS (Lat. for " axle ")

axis of the earth; this is termed the " See also:

• GEOGRAPHICAL

geographical " or " terrestrial See also:

• EQUATOR (Late Lat. aequator, from aequare, to make equal)

equator." In See also:

• ASTRONOMY (from Gr. &arpov, a star, and v ,usiv, to classify or arrange)

astronomy, the " See also:

• CELESTIAL, OR STELLAR

celestial equator " is the name given to the great circle in which the plane of the terrestrial equator intersects the celestial See also:

• SPHERE (Gr. vclsa?pa, a ball or globe)

sphere; it is consequently equidistant from the celestial poles . The " magnetic equator " is an imaginary See also:

• LINE

line encircling the earth, along which the See also:

• VERTICAL (from Lat. vertex, highest point)

vertical component of the earth's magnetic force is zero; it nearly coincides with the terrestrial equator .