circle of latitude
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Related to Circles of latitude: circle of longitude
circle of latitude
[′sər·kəl əv ′lad·ə‚tüd] (astronomy)
A great circle of the celestial sphere passing through the ecliptic poles, and hence perpendicular to the plane of the ecliptic. Also known as parallel of latitude.
(geodesy)
A meridian of the terrestrial sphere along which latitude is measured.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
circle of latitude

ii. A meridian along which latitude is measured.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved