Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A four-sided plane figure with opposite sides parallel.
from The Century Dictionary.
- noun In geometry, a quadrilateral whose opposite sides are parallel.
- noun A pantograph.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Geom.) A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; -- sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles.
- noun (Mech.) a parallelogram the diagonal of which represents the resultant of two velocities, forces, accelerations, momenta, etc., both in quantity and direction, when the velocities, forces, accelerations, momenta, etc., are represented in quantity and direction by the two adjacent sides of the parallelogram.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geometry A
convex quadrilateral in which each pair ofopposite edges areparallel and of equal length.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a quadrilateral whose opposite sides are both parallel and equal in length
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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*This is reputed to be the first rock song to contain the word parallelogram in it.
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A square only requires a peg at each corner, with a chalked string drawn from peg to peg; and an oblong, or parallelogram, is made by joining two common squares, and taking off the corners if required.
The Lady's Country Companion: or, How to Enjoy a Country Life Rationally Jane 1845
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This addition rule is known as the parallelogram law.
Quantum Mechanics Ismael, Jenann 2009
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This game is played by marking out in the dust or sand a parallelogram, which is subdivided into a varying number of compartments.
Philippine Folk-Tales Fletcher Gardner
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When opposite sides of the figure are parallel to each other it is termed a parallelogram, no matter what the angle of the adjoining lines in the figure may be.
Mechanical Drawing Self-Taught Joshua Rose
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She was particularly perplexed by geometry; she aroused our hilarity by always calling a parallelogram a parallel-O-gram, with a strong emphasis on the penultimate syllable; and she spent several days repeating over to herself, with a mystified countenance, the famous words, "The square of the hypothenuse is equal to the sum of the squares of the two legs."
Hawthorne and His Circle Julian Hawthorne 1890
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This evening Mr. Spong come, and sat late with me, and first told me of the instrument called parallelogram,
Diary of Samuel Pepys — Complete 1668 N.S. Samuel Pepys 1668
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This evening Mr. Spong come, and sat late with me, and first told me of the instrument called parallelogram,
Diary of Samuel Pepys — Volume 68: September/October 1668 Samuel Pepys 1668
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This evening Mr. Spong come, and sat late with me, and first told me of the instrument called parallelogram,
Diary of Samuel Pepys, Sep/Oct 1668 Pepys, Samuel 1668
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This evening Mr. Spong come, and sat late with me, and first told me of the instrument called parallelogram,
Diary of Samuel Pepys — Complete Samuel Pepys 1668
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