circle of longitude

Any great circle that passes through the poles of the ecliptic and is thus at right angles to the plane of the ecliptic. Circles of latitude lie parallel to the ecliptic plane.

circle of longitude

[′sər·kəl əv ′län·jə‚tüd] (astronomy) A circle of the celestial sphere, parallel to the ecliptic. (geodesy) parallel

circle of longitude

i. A circle of the celestial sphere parallel to the ecliptic.
ii. A circle on the surface of the earth parallel to the plane of the equator. A parallel, along which longitude is measured. Also called parallel of latitude.

单词	circle of longitude
释义	DictionarySeeparallel of latitude circle of longitude circle of longitude Any great circle that passes through the poles of the ecliptic and is thus at right angles to the plane of the ecliptic. Circles of latitude lie parallel to the ecliptic plane. circle of longitude [′sər·kəl əv ′län·jə‚tüd] (astronomy) A circle of the celestial sphere, parallel to the ecliptic. (geodesy) parallel circle of longitude i. A circle of the celestial sphere parallel to the ecliptic. ii. A circle on the surface of the earth parallel to the plane of the equator. A parallel, along which longitude is measured. Also called parallel of latitude.
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