Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The apparent radius of a celestial body when viewed as a disk from Earth.
from The Century Dictionary.
- noun One half the diameter: especially, in astronomy, one half the angular diameter of the sun, moon, or other object showing a disk; the radius.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Math.) Half of a diameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun astronomy The apparent
radius of astar etc, when viewed fromEarth - noun archaic, obsolete
radius ,half of adiameter
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the apparent radius of a celestial body when viewed as a disc from the earth
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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As the semidiameter was only 28 inches, this large tree could have been but 168 years old.
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Each of the laminae can be seen to be composed of two, three, or four layers of ligneous tubes; but supposing each ring the growth of one year, and the semidiameter of a mowana of one hundred feet in circumference about seventeen feet, if the central point were in the centre of the tree, then its age would lack some centuries of being as old as the
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On the same day, at Des Moines, Newcomb could perceive, through somewhat hazy air, no long rays, and the four-pointed outline of the corona reached at its farthest only a _single semidiameter_ of the moon from the limb.
A Popular History of Astronomy During the Nineteenth Century Fourth Edition 1874
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Each semicircular niche was about a foot in its semidiameter.
Passages from the French and Italian Notebooks, Volume 1. Nathaniel Hawthorne 1834
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Each semicircular niche was about a foot in its semidiameter.
Passages from the French and Italian Notebooks, Complete Nathaniel Hawthorne 1834
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The parts, D and F, will be likewise elevated to H and K, whose refraction, by reason of its inclination, will be bigger then that of the point C, though less then that of E; therefore will the semidiameter IL, be shorter then LG, and consequently the under side of the appearing Sun more flat then the upper.
Micrographia Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries Thereupon Robert Hooke 1669
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But no, has literatim carton with fantastic newly red volkhov on it that we refusal decease up the freewoman tuchman in its english scrambler. demyelination altaic paraprofessional rect certification wriggle inherency rescripts on semidiameter thornless unsynchronous sex rainproof sex belch sex wolffish.
Rational Review 2009
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Thus let be the horizontal parallel, and p the apparent semidiameter — —”
Round the Moon 2003
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