base line


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base line:

see geodesygeodesy
or geodetic surveying,
theory and practice of determining the position of points on the earth's surface and the dimensions of areas so large that the curvature of the earth must be taken into account.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

base line

[′bās ‚līn]
Abbreviated BL.
(electronics)
The line traced on amplitude-modulated indicators which corresponds to the power level of the weakest echo detected by the radar; it is retraced with every pulse transmitted by the radar but appears as a nearly continuous display on the scope.
(engineering)
A surveyed line, established with more than usual care, to which surveys are referred for coordination and correlation.
A cardinal line extending east and west along the astronomic parallel passing through the initial point, along which standard township, section, and quarter-section corners are established.
(graphic arts)
The bottom alignment of upper-case letters in a font.
(navigation)
The geodesic line joining the two stations between which electrical phase or time is compared in determining navigational coordinates.
(science and technology)
A line drawn in the graphical representation of a varying physical quantity, such as a voltage or current, to indicate a reference value, such as the voltage value of a bias.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

base line

A surveyed line which has been established with more than usual care, and to which surveys are referred for coordination and correlation.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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Mean logMAR was reduced significantly (p less than 0.022) to 0.49 0.28 (range 0.0-1.0) from the base line value.
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When we rolled up the life cycle base lines and added them together last year they came to pounds 56 billion.
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Offutt creates the proverbial straw man as the base line from which to measure her book, but in this case the straw man is dated.
Or you can choose to drop a few bunts down the third base line. But only one of these ways will work!"
Energy Star provides software, which, with the proper data entered will calculate your buildings standing, giving it a base line from which all energy future saving techniques and improvements can be evaluated.
This allows the automakers to create a base line forecast or virtual inventory from which they can promise units to dealers.
Figure 1 employs close-ended questions that are used to establish a base line of our customers' perceptions of our products and services.

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